\[10x-8=7\]
1
Add 88 to both sides.
10x=7+810x=7+8

2
Simplify  7+87+8  to  1515.
10x=1510x=15

3
Divide both sides by 1010.
x=1510x=\frac{15}{10}

4
Simplify  1510\frac{15}{10}  to  32\frac{3}{2}.
x=32x=\frac{3}{2}

Done

Decimal Form: 1.5

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