Solve for k
k=20
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4\times 20=4k
Multiply both sides of the equation by 32, the least common multiple of 8,32.
80=4k
Multiply 4 and 20 to get 80.
4k=80
Swap sides so that all variable terms are on the left hand side.
k=\frac{80}{4}
Divide both sides by 4.
k=20
Divide 80 by 4 to get 20.
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