-y-(-7y+6y)=-4

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Solution for -y-(-7y+6y)=-4 equation: 


Simplifying
-1y + -1(-7y + 6y) = -4

Combine like terms: -7y + 6y = -1y
-1y + -1(-1y) = -4

Remove parenthesis around (-1y)
-1y + -1 * -1y = -4

Multiply -1 * -1
-1y + 1y = -4

Combine like terms: -1y + 1y = 0
0 = -4

Solving
0 = -4

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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