\[5x+7=3\]
1
Subtract 77 from both sides.
5x=3−75x=3-7

2
Simplify  3−73-7  to  −4-4.
5x=−45x=-4

3
Divide both sides by 55.
x=−45x=-\frac{4}{5}

Done

Decimal Form: -0.8

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