\[10x+2=7\]
1
Subtract 22 from both sides.
10x=7−210x=7-2

2
Simplify  7−27-2  to  55.
10x=510x=5

3
Divide both sides by 1010.
x=510x=\frac{5}{10}

4
Simplify  510\frac{5}{10}  to  12\frac{1}{2}.
x=12x=\frac{1}{2}

Done

Decimal Form: 0.5

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