20X 120 10X how to check

Calculate the value of x and check it.

Problem solving: Move the unknowns to the left and merge them by moving the terms, move the constant terms to the right and merge them, and finally turn the unknown coefficients to 1

Problem solving: 20x=120-10x

30x=120

x=4 check: 20 4=120-10 4

If you have any doubts, please ask and be satisfied.

First, calculate the answer, how much x is equal to, and then bring x back to the original formula, and see that it is not true, and if the two sides of the equal sign are true, it is correct.

20x+10x=120-10ⅹ+10x

30x=120

x=120÷30

x=4 test: left side of the equation=20x4=80

Right side of the equation: 120-10x4=80

Left = Right.

x=4 is the solution of the equation.

Hello, it is directly on both sides to add 4x at the same time to get 30x, equal to 120 on both sides and divide by 30 at the same time to get x=4, so the test is to bring x=4 into the above equation. The equation on both sides is found to be equal.

The shift is equal to 20x+10x=120

Simplification is equal to 30x=120

Dividing both sides of the equation by 30 equals x=4

Test: Substituting x=4 into equation 20 4=120-10 4 so the result is correct.

Test: Left side of the dislike equation = x 21

The equation is on the right. So, x=9 is the solution of the equation.

Calculate the value of x.

25x=50

x=2 test. The test is to substitute the value of x into the left and right sides of the equation, and if the vertical side of the left shirt is equal to the right, then the equation holds.

Substituting x=2 into the equation, the 24x+x state on the left is 24*2+2=48+2=50;50 on the right, left equals right, sail collapse so x=2 is the solution of the equation.

10+14)x=120

24x=120

x=120÷24

x=5 test: Let Qin x=5 be substituted into the equation, and the left side of the square Zheng Cheng = 10 5 + 14 5 = 120

Equation right = 120

The left side of the equation = the right side of the equation, so x=5 is the solution of the equation.

This problem is the collapse of the Dao equation x-20 x 40, first find the value of x, and then test.

That is: regimental x-20 40

x 40 x 50 test: Substitute x 50 to the left of the equation.

Left x-20

50-1-10

Left = Right.

So 50 is the solution of the original equation.

x=120-40

x=80 test brings x=8 into the left side of the large type of equal demolition.

Left side of the equation = right side of the equation, x = 80 is the solution of the equation.

The simple calculation process is as follows:

1. Extract the original formula: 120-4 x=40

2. Calculation process: filial piety.

4 x=120-40

4 x=80

x=80÷4

x=203, calculated result: x=20

Summary. 24x ten x = 50 test.

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I wish you progress in your studies and a happy life!

According to the wild dilemma inscription, the meaning of mindfulness can be obtained:

20×20+12x=500

400+12x=500

12x=500-400

12x=100

x=100 Clearer 12

x=25/3

Solve the equation: 20 20 + 12x = 500

400+12x=500

12x=500-400

x=100 12

x=25 to make a medium Lee 3

Late Calculation: Left. Right.

Lead decomposition imitation: 20 20 + 12x = 500

12x=500-400

x=100 12=8 and Huaichang 1 3

Inspection: 20 20 + 12 (8 and 1 3) = 400 + 96 + 4 = 500