18 7x 39 Equation solving process

18+7x=39

Solution: 7x=39-18

7x=21x=3

The value of an unknown that equalizes the left and right sides of the equation is called the solution of the equation. The process of finding the solution of an equation is called solving an equation.

An equation that must contain an equation of unknowns is called an equation. An equation doesn't have to be an equation, an equation has to be an equation.

Unary Linear Equations.

Refers to the existence of only one unknown, the highest number of unknowns is 1, and both sides are integers.

of the equation. Unary linear equations have only one root. The unary equation can solve most of the engineering problems, travel problems, distribution problems, profit and loss problems, and integral tables.

Questions, billing issues, numerical issues.

18+7x=39

Subtract 18 from both sides of the equal sign at the same time to get.

18+7x-18=39-18

7x=21 equal sign is divided by 7 on both sides at the same time.

7x/7=21/7

x=3 has a denominator and goes to the denominator first.

If there are parentheses, remove the parentheses.

If you need to move an item, you will do it.

Merge items of the same kind.

The coefficient is reduced to 1 to obtain the value of the unknown.

Write "solution" at the beginning

18+7x=39 The process of solving the equation is as follows:

18+7x=39

Solution: 18+7 -18=39-18

7x÷7=21÷7

x=3, so 18+7x=39 solves the equation and the final result is x=3.

18+7x=39 The process of solving the equation is as follows:

Solution: 18+7 -18=39-18

7x÷7=21÷7

x=3, so 18+7x=39 solves the equation and the final result is x=3.

The process of solving the equation 18+7x=39 is as follows:

18+7x=39

Solution: 18+7 -18=39-18

7x÷7=21÷7

x=3, so the final result of solving the equation for 18+7x=39 is x=3.

The first equation solution is x 3Second, the specific process is as follows.

18+7x＝39

18+7x7x

7x÷7x＝3

Third, to solve the equation is to find x, and the equation can be solved by using the properties of the equation.

The solution of the equation does not change if two sides of the equation are added or subtracted from the same number at the same time

Multiply or divide both sides of the equation at the same time by a number that is not 0, and the solution of the equation does not change.

So first of all, subtract 18 from both sides at the same time, and there is 7x left on the left side before the right side is 39-18=21,Then divide 7 on both sides of the equation at the same time, the left is x and the right is the wilted locust finch 21 7 = 3

Bring in the check 18 + 7 3 = 18 + 21 = 39

The left side is equal to the right side, so the solution of the equation is x 3

18+7x=39

Solution: 7x=39-18

7x=21x=3

The value of the unknown pico-collision scatter that equalizes the left and right sides of the equation is called the solution of the equation. The process of finding the solution of an equation is called solving an equation. An equation that must contain an equation of unknowns is called an equation. An equation doesn't have to be an equation, an equation has to be an equation.

A univariate equation is an equation that contains only one unknown, the highest order of the unknowns is 1, and both sides are integers. Unary linear equations have only one root. The unary equation can solve most of the engineering problems, travel problems, distribution problems, profit and loss problems, integral table problems, billing problems, and number problems.

Solution: He Bocheng question, Zen orange auspicious eyes.

18+7x=39

Simplification: 7x=39-18

7x.=21

So x=21 7

The solution of the Wu segment of the equation is x=3