7-3z+4z-9=0 10x-3+5=x+3x 3x-2=5x+10 Помогите пожалуйста. Created by ksjuha02. matematika-ru

7-3z+4z-9=0 10x-3+5=x+3x 3x-2=5x+10 Помогите пожалуйста...

July 2022 2 3 Report

7-3z+4z-9=0
10x-3+5=x+3x
3x-2=5x+10

Помогите пожалуйста

Verified answer

7 - 3z + 4z - 9 = 0
z = 9 - 7
z = 2
-----------------------------
10x - 3 + 5 = x + 3x
10x - x - 3x = 3 - 5
6x = - 2
x = -2/6
x = - 1/3
-------------------------
3x - 2 = 5x + 10
3x - 5x = 10 + 2
-2x = 12
x = - 6

4 votes Thanks 4

konov061 7-3z+4z-9=0
-3z+4z=9-7
z=2

10x-3+5=x+3x
10x-x-3x=3-5
6x=-2
x=-2/6

3x-2=5x+10
3x-5x=10+2
-2x=12
x=12:(-2)
x=-6

2 votes Thanks 2

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