12-21y=10y+40

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Solution for 12-21y=10y+40 equation:


Simplifying
12 + -21y = 10y + 40

Reorder the terms:
12 + -21y = 40 + 10y

Solving
12 + -21y = 40 + 10y

Solving for variable 'y'.

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

Add '-10y' to each side of the equation.
12 + -21y + -10y = 40 + 10y + -10y

Combine like terms: -21y + -10y = -31y
12 + -31y = 40 + 10y + -10y

Combine like terms: 10y + -10y = 0
12 + -31y = 40 + 0
12 + -31y = 40

Add '-12' to each side of the equation.
12 + -12 + -31y = 40 + -12

Combine like terms: 12 + -12 = 0
0 + -31y = 40 + -12
-31y = 40 + -12

Combine like terms: 40 + -12 = 28
-31y = 28

Divide each side by '-31'.
y = -0.9032258065

Simplifying
y = -0.9032258065

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