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Define variable. Show work

3/8 = 7/x+1

1 answer

I assume you mean 3/8 = 7/(x+1).

Multiply both sides by x+1.

3/8x + 3/8 = 7

Subtract 3/8 from both sides.

3/8x = 6 5/8 = 53/8

Multiply both sides by 8/3.

x = 53/8 * 8/3 = ?
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