4x×2y=84x\times 2y=8
Solving for x. Want to solve for y instead?
1
Simplify  4x×2y4x\times 2y  to  8xy8xy.
8xy=88xy=8

2
Divide both sides by 88.
xy=1xy=1

3
Divide both sides by yy.
x=1yx=\frac{1}{y}

Done
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