Solve for x
x=8
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28+x\times 9=100
Multiply both sides of the equation by 4.
x\times 9=100-28
Subtract 28 from both sides.
x\times 9=72
Subtract 28 from 100 to get 72.
x=\frac{72}{9}
Divide both sides by 9.
x=8
Divide 72 by 9 to get 8.
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