11y+12=8y+21

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Solution for 11y+12=8y+21 equation:


Simplifying
11y + 12 = 8y + 21

Reorder the terms:
12 + 11y = 8y + 21

Reorder the terms:
12 + 11y = 21 + 8y

Solving
12 + 11y = 21 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
12 + 11y + -8y = 21 + 8y + -8y

Combine like terms: 11y + -8y = 3y
12 + 3y = 21 + 8y + -8y

Combine like terms: 8y + -8y = 0
12 + 3y = 21 + 0
12 + 3y = 21

Add '-12' to each side of the equation.
12 + -12 + 3y = 21 + -12

Combine like terms: 12 + -12 = 0
0 + 3y = 21 + -12
3y = 21 + -12

Combine like terms: 21 + -12 = 9
3y = 9

Divide each side by '3'.
y = 3

Simplifying
y = 3

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