21y-(21(y-1))=8

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Solution for 21y-(21(y-1))=8 equation: 


Simplifying
21y + -1(21(y + -1)) = 8

Reorder the terms:
21y + -1(21(-1 + y)) = 8
21y + -1((-1 * 21 + y * 21)) = 8
21y + -1((-21 + 21y)) = 8
21y + (-21 * -1 + 21y * -1) = 8
21y + (21 + -21y) = 8

Reorder the terms:
21 + 21y + -21y = 8

Combine like terms: 21y + -21y = 0
21 + 0 = 8
21 = 8

Solving
21 = 8

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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