The process of finding a system of ternary equations! Ask my brothers and sisters to help me!

x=9+2y

z=y-32z+x=47

2(y-3)+9+2y=47

4y=44y=11

You don't need to put it later.,Replace each other and come out.。。。

To solve a ternary equation, first represent one of the children and mothers with the other children and mothers, and substitute the other two equations. This becomes a binary equation. Then use the substitution method or the addition, subtraction, and elimination method to solve the binary equation.

If you've learned determinants, use Cramer's rule.

If you haven't learned, you can add or subtract yuan.

Why are these 3 questions?。。。 You just trust me. 5555y=2x-7

5x+3y+2z=2

3x-4z=4

Bring (1) into (2) to obtain: 5x+6x-21+2z=211x+2z=23

Get: 22x+4z=46

3) + (5) gets: 25x=50

x=2 is solved, x=2 is brought into (1) and (3) respectively, and y=-3z=1 2 is solved, respectively, which is tested. The result is correct.

4x-9y=17

3x+y+15z=18

x+2y+3z=2

(3) 5 gets: 5x+10y+15z=104)-(2)gets:6x=9

x = bring x= into Bi Jue (1) solve y = -11 9 bring x = and y = -11 9 into (3) solve z = 53 54 will solve xy

Z-in (Hand Height 2) The test result is correct.

4x+9y=12

3y-2z=1

7x+5z=19/4（3）

Will (2)*3

Gets: 9y-6z=3

(1)-(4) gets: 4x+6z=9(5) (3)*4 gets: Nianqin 28x+20z=19(6) (5)*7 gets: 28x+42z=63(7)7)-(6) gets: 22z=44

z=2 brings z=2 into (2) to get y=5 3

Bring y=5 3 into (1) to get x=-3 4

(1) x+y-z=17, y+x-z=-1 These two formulas are the same, but the numbers are different, is it wrong?

2) x+y+z=26

x-y=1 These two equations are combined to give 2x+z=27, z=27-2x

x+y+z2x-y+z=18 These two equations are combined to give 3x+2z=44 , z=(44-3x) 2, z=27-2x

z=(44-3x)/2 27-2x=(44-3x)/2 x=10 z=7 y=9

3) x 7=y 10 from this equation to get x=7 10y to substitute it into 2x+3y=44 to get y=10 to substitute 10 to get z=5 x=7

<> satisfied with the plagiarism and retreat! If you have questions, you can ask them

1. Bring y=x+1 into 2x+y+z=1 to get 3x+z=0, and then bring in the third formula. x-2x-1-3x=-6 gives x=5 4, bringing in formula: y=9 4, bringing in formula 3: z=-11 4

2. Multiply the formula by 2 to get 2x+z=1, and subtract the formula to get 7x+y=19The two formulas are brought in, x-19+7x+1-2x=0, and x=3 is obtained, and the formulas are brought in and obtained respectively, y=-2, z=-5

To do the equation is the equation turns into only one unknown formula 14x + 8y + 2z = 50 ...12x+ 8y + 4z = 44 ..10x+ 11y + 3z = 41 ..

Method one: Use the unknown solution instead of the other two unknowns, which is 2x-2y=6, and the simplification is x=z+3.is 2x-3y + z = 3 .

..In the 2nd generation (z + 3) - 3y + z = 3, simplified to y = z + 1 .Instead of x = 3, y = 1, so the 0 equation is x = 3 z =, y = 1, z = 0 method 2:

The ternary equation is a system of linear equations that solves 2 to get 16x + 8y = 56, simplifying get 2x + y = 7 .4x+20y=32 for 3-4, simplification is x+5y=8....

2 get 9y=9, y=1 to y=1 generation get x = 3 to y = 1, x = 3 substitution to get the solution of z = 0, so the equation x = 3, y = 1, z = 0.