\[7x-10=7\]

1
Add 1010 to both sides.
7x=7+107x=7+10

2
Simplify  7+107+10  to  1717.
7x=177x=17

3
Divide both sides by 77.
x=177x=\frac{17}{7}

Done

Decimal Form: 2.428571

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