10n = 20n = 2
2x + 3 = 112x = 8x = 4
12x * 14 = 10168x = 10x = 10/168x = 5/84
16 - 3x = 13x = 15x = 15/3x = 5
27 - (6x + 2x) = 327 - 8x = 3-8x = -24x = 3
10n = 20
n = 2
2x + 3 = 11
2x = 8
x = 4
12x * 14 = 10
168x = 10
x = 10/168
x = 5/84
16 - 3x = 1
3x = 15
x = 15/3
x = 5
27 - (6x + 2x) = 3
27 - 8x = 3
-8x = -24
x = 3