Solve for x
x=425
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5\times 105=100+x
Multiply both sides by 105.
525=100+x
Multiply 5 and 105 to get 525.
100+x=525
Swap sides so that all variable terms are on the left hand side.
x=525-100
Subtract 100 from both sides.
x=425
Subtract 100 from 525 to get 425.
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