1) 3.2x - 1.2x = -4.9-2.7
2x = -7.6
x=-3.8
2) -5.6y+2.9y = -9.8+3.86
-2.7y = -5.94
y = 2.2
3) -z-2.8z = -0.14-3.7
-3.8z = -3.84
z = 384/380 = 1 1/95
4) 3.5x+3.1x = -1.73+1.9
6.6x = 0.17
x = 17/660
5) -1.9y+3.5y = 4.2-2.8
1.6y = 1.4
y = 7/8
6) 2.5z-3.4z = -3.9+5.2
-0.9z = 1.3
z = -13/9 = -1 4/9