21+2y-7=9y-10-3y

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Solution for 21+2y-7=9y-10-3y equation:


Simplifying
21 + 2y + -7 = 9y + -10 + -3y

Reorder the terms:
21 + -7 + 2y = 9y + -10 + -3y

Combine like terms: 21 + -7 = 14
14 + 2y = 9y + -10 + -3y

Reorder the terms:
14 + 2y = -10 + 9y + -3y

Combine like terms: 9y + -3y = 6y
14 + 2y = -10 + 6y

Solving
14 + 2y = -10 + 6y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-6y' to each side of the equation.
14 + 2y + -6y = -10 + 6y + -6y

Combine like terms: 2y + -6y = -4y
14 + -4y = -10 + 6y + -6y

Combine like terms: 6y + -6y = 0
14 + -4y = -10 + 0
14 + -4y = -10

Add '-14' to each side of the equation.
14 + -14 + -4y = -10 + -14

Combine like terms: 14 + -14 = 0
0 + -4y = -10 + -14
-4y = -10 + -14

Combine like terms: -10 + -14 = -24
-4y = -24

Divide each side by '-4'.
y = 6

Simplifying
y = 6

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