Answer:
1. 2x + 11 = 3x - 45
Answer: 56
Subtract 11 from both sides of the equation:
2x + 11 - 11 = 3x - 45 - 11
Subtract the numbers
2x = 3x - 56
Subtract 3x from both sides of the equation
2x - 3x = 3x - 56 - 3x
Simplify
-x = -56
Divide both sides of the equation by the same term
-x / -1 = -56 / -1
Simplify
x = 56
2. (2x - 5) + (4x - 7) = 180
Answer: 32
Subtract the numbers
2x - 12 + 4x = 180
Combine like terms
6x - 12 = 180
Add 12 to both sides of the equation
6x - 12 + 12 = 180 + 12
Simplify
6x = 192
Divide both sides of the equation by the same term
6x / 6 = 192 / 6
Simplify
x = 32
3. (x - 20) + (3x + 6) = 90
Answer: 26
Add the numbers
x - 14 + 3x = 90
Combine like terms
4x - 14 = 90
Add 14 to both sides of equation
4x - 14 + 14 = 90 + 14
Simplify
4x = 104
Divide both sides of the equation by the same term
4x / 4 = 104 / 4
Simplify
x = 26
Step-by-step explanation:
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