\[3x+7=2\]
1
Subtract 77 from both sides.
3x=2−73x=2-7

2
Simplify  2−72-7  to  −5-5.
3x=−53x=-5

3
Divide both sides by 33.
x=−53x=-\frac{5}{3}

Done

Decimal Form: -1.666667

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