1) 2x + 1 = 5x + 13
⇔ -3x = 12
⇔ x = -4
2) 9x - 11 = 4x + 14
⇔ 5x = 3
⇔ x = 5/3
3) -12x + 37 = 2x - 5
⇔ 42 = 14x
⇔ 3 = x
4) 32x + 108 = 23x - 18
⇔ 9x = 90
⇔ x = 10
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1) 2x + 1 = 5x + 13
⇔ -3x = 12
⇔ x = -4
2) 9x - 11 = 4x + 14
⇔ 5x = 3
⇔ x = 5/3
3) -12x + 37 = 2x - 5
⇔ 42 = 14x
⇔ 3 = x
4) 32x + 108 = 23x - 18
⇔ 9x = 90
⇔ x = 10
2x - 5x = 13 - 1
-3x = 12
x = 12/-3
x = -4
2. 9x - 11 = 4x + 14
9x - 4x = 14 + 11
5x = 25
x = 25/5
x = 5
3. -12x + 37 = 2x - 5
-12x - 2x = - 5 - 37
-14x = -42
x = -42/-14
4. 32x + 108 = 23x - 18
32x - 23x = -18 - 108
9x = -126
x = -126/9
x = -14