ДАЮ 50 БАЛЛОВ УМОЛЯЮ ПОДРОБНО ВСЕ КАК НАДО!!!!!!

Ответы
Решение:
1) 10x-8 = 0 5) 9x-4 = 10x
10x = 8 9x-10x = 4
x = 8/10 -x = 4 | × (-1)
x = 0,8 x = -4
2) 4x-7 = 0 6) 9 = 5(x+9)
4x = 7 9 = 5x + 45
x = 7/4 -5x = 45-9
x = 1,75 -5x = 36
x = - 36/5
3) 8x-5 = 10x x = -7,2
8x - 10x = 5
-2x = 5 7) 7(-3+2x) = -6x-1
x = - 5/2 -21+14x = -6x-1
x = -2,5 14x+6x = -1+21
20x = 20
4) 6x = x-2 x = 1
6x-x = -2
5x = -2
x = - 2/5
x = - 0,4