Solve for x
x=15
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3x+20-4x=5
Subtract 4x from both sides.
-x+20=5
Combine 3x and -4x to get -x.
-x=5-20
Subtract 20 from both sides.
-x=-15
Subtract 20 from 5 to get -15.
x=15
Multiply both sides by -1.
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