12 terms

3x + 2x = 10

x = 2

5(2x + 3) = 45

x = 3

x + 5x - 6 = 30

x = 4

6 ( 3 + 2x) = 30

x = 1

4 (x + 3) + x = 47

x = 7

-3(2x- 8) + 10x = 16

x = -2

12 = (x/27) + 17

x = - 180

(x/12) + 25 = 29

x = 48

-5 = -19 - (x/7)

x = -98

80 = 23 - 3x

x = -19

3.2x + 14.7 = - 6.74

x = -6.7

54.7 = -9.3x + 8.2

x = -5