7y+-21+-4y+-8=3y+-21

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Solution for 7y+-21+-4y+-8=3y+-21 equation: 


Simplifying
7y + -21 + -4y + -8 = 3y + -21

Reorder the terms:
-21 + -8 + 7y + -4y = 3y + -21

Combine like terms: -21 + -8 = -29
-29 + 7y + -4y = 3y + -21

Combine like terms: 7y + -4y = 3y
-29 + 3y = 3y + -21

Reorder the terms:
-29 + 3y = -21 + 3y

Add '-3y' to each side of the equation.
-29 + 3y + -3y = -21 + 3y + -3y

Combine like terms: 3y + -3y = 0
-29 + 0 = -21 + 3y + -3y
-29 = -21 + 3y + -3y

Combine like terms: 3y + -3y = 0
-29 = -21 + 0
-29 = -21

Solving
-29 = -21

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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