Solve for x
x=20
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2\times 4+2\times 4=x-4
Variable x cannot be equal to 4 since division by zero is not defined. Multiply both sides of the equation by 2\left(x-4\right), the least common multiple of x-4,4-x,2.
8+8=x-4
Do the multiplications.
16=x-4
Add 8 and 8 to get 16.
x-4=16
Swap sides so that all variable terms are on the left hand side.
x=16+4
Add 4 to both sides.
x=20
Add 16 and 4 to get 20.
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