1) 13x + 27 = 16x + 4.5Subtract 13x from both sides:27 = 3x + 4.5Subtract 4.5 from both sides:22.5 = 3xDivide by 3:x = 7.5
2) 21x + 45 = 17 + 14xSubtract 14x from both sides:7x + 45 = 17Subtract 45 from both sides:7x = -28Divide by 7:x = -4
3) 13x + 70 = 2x + 15Subtract 2x from both sides:11x + 70 = 15Subtract 70 from both sides:11x = -55Divide by 11:x = -5
1) 13x + 27 = 16x + 4.5
Subtract 13x from both sides:
27 = 3x + 4.5
Subtract 4.5 from both sides:
22.5 = 3x
Divide by 3:
x = 7.5
2) 21x + 45 = 17 + 14x
Subtract 14x from both sides:
7x + 45 = 17
Subtract 45 from both sides:
7x = -28
Divide by 7:
x = -4
3) 13x + 70 = 2x + 15
Subtract 2x from both sides:
11x + 70 = 15
Subtract 70 from both sides:
11x = -55
Divide by 11:
x = -5