Solve for x
x=8
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64=4+20x-100
Use the distributive property to multiply 5 by 4x-20.
64=-96+20x
Subtract 100 from 4 to get -96.
-96+20x=64
Swap sides so that all variable terms are on the left hand side.
20x=64+96
Add 96 to both sides.
20x=160
Add 64 and 96 to get 160.
x=\frac{160}{20}
Divide both sides by 20.
x=8
Divide 160 by 20 to get 8.
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