Solve for x
x=33
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18=-20x-15+21x
Use the distributive property to multiply -5 by 4x+3.
18=x-15
Combine -20x and 21x to get x.
x-15=18
Swap sides so that all variable terms are on the left hand side.
x=18+15
Add 15 to both sides.
x=33
Add 18 and 15 to get 33.
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