1) 10x - 8x = -9 - 72x = -16x = -8
2) 20 + 45 = 2x + 3x65 = 5xx = 13
3) 1.9x - 2x = 2 - 2.7-0.1x = -0.7x = 7
4) 13/18x - 7/12x = 8 - 13(13/18 - 7/12)x = -5(2/18 - 3/18)x = -5-1/18x = -5x = 90
1) 10x - 8x = -9 - 7
2x = -16
x = -8
2) 20 + 45 = 2x + 3x
65 = 5x
x = 13
3) 1.9x - 2x = 2 - 2.7
-0.1x = -0.7
x = 7
4) 13/18x - 7/12x = 8 - 13
(13/18 - 7/12)x = -5
(2/18 - 3/18)x = -5
-1/18x = -5
x = 90