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`2+(-1)(7)=5(-1)`

We simplify the equation to the form, which is simple to understand

2+(-1)*(7)=5(-1)

Reorder the terms in parentheses

multiplication of parentheses

2+(-7)=5*(-1)

Remove unnecessary parentheses

+2-7=+5+*(-1+)

Reorder the terms in parentheses

2-7=+(-5)

Remove unnecessary parentheses

+2-7=-5

We move all terms containing to the left and all other terms to the right.

0=-5-2+7

We simplify left and right side of the equation.

0=0

0=0

This equation is an identity, so all real numbers are solutions.

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