Question

10+5(x-1)-4(x-1)=0 10x-6(2x+3)=-4 -1(5x-7)=7​

Answer 1

Ответ:

$10 + 5(x -1) - 4(x - 1) = 0 \\ 10 + 5x - 5 - 4x + 4 = 0 \\ 5x - 4x = - 10 + 5 - 4 \\ x = - 9$

$10x - 6(2x + 3) = - 4 \\ 10x - 12x - 18 = - 4 \\ 10x - 12x = - 4 + 18 \\ - 2x = 14 \\ x = - 7$

$- 1(5x - 7) = 7 \\ - 5x + 7 = 7 \\ - 5x = 7 - 7 \\ - 5x = 0 \\ x = 0$