8x+7=98x+7=9
1
Subtract 77 from both sides.
8x=9−78x=9-7

2
Simplify  9−79-7  to  22.
8x=28x=2

3
Divide both sides by 88.
x=28x=\frac{2}{8}

4
Simplify  28\frac{2}{8}  to  14\frac{1}{4}.
x=14x=\frac{1}{4}

Done

Decimal Form: 0.25

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