\[8x+9=7\]
1
Subtract 99 from both sides.
8x=7−98x=7-9

2
Simplify  7−97-9  to  −2-2.
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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