10+9(-10-9x)=8-x
10 – 90 – 81x = 8 – x
– 81x + x = 8 + 90 – 10
-80x = 88
x = -1.1
-1+8(7-6x)=2x+6
– 1 + 56 – 48x = 2x + 6
– 48x – 2x = 6 – 56 + 1
-50x = -49
x = 0.98
10+9(-10-9x)=8-x
10 – 90 – 81x = 8 – x
– 81x + x = 8 + 90 – 10
-80x = 88
x = -1.1
-1+8(7-6x)=2x+6
– 1 + 56 – 48x = 2x + 6
– 48x – 2x = 6 – 56 + 1
-50x = -49
x = 0.98