2x + 3 = 61
29
2x - 7 > 3
x > 5
1/2x = 16
32
2a + 3x - 6a + 10x
-4a + 13x
10x - 7 = 15x
-1.4
3 < -6x - 21
-4 > x OR x < -4
2/3x + 15 = 125
165
10xy + 12xyz - 4xy + 10xy
16xy +12xyz