\[2x+7=4\]
1
Subtract 77 from both sides.
2x=4−72x=4-7

2
Simplify  4−74-7  to  −3-3.
2x=−32x=-3

3
Divide both sides by 22.
x=−32x=-\frac{3}{2}

Done

Decimal Form: -1.5

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