8х - 6х +9 = 7х - 10х - 168х - 6х - 7х + 10х = -16 - 95х = -25х = -5ответ: -5.
8x-3(2x-3)=7x-2(5x+8)
8x-6x+9=7x-10x-16
8x-6x-7x+10x=-16-9
5x=-25
x = -5
8х - 6х +9 = 7х - 10х - 16
8х - 6х - 7х + 10х = -16 - 9
5х = -25
х = -5
ответ: -5.
8x-3(2x-3)=7x-2(5x+8)
8x-6x+9=7x-10x-16
8x-6x-7x+10x=-16-9
5x=-25
x = -5