21y-10=7y+18

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Solution for 21y-10=7y+18 equation:


Simplifying
21y + -10 = 7y + 18

Reorder the terms:
-10 + 21y = 7y + 18

Reorder the terms:
-10 + 21y = 18 + 7y

Solving
-10 + 21y = 18 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
-10 + 21y + -7y = 18 + 7y + -7y

Combine like terms: 21y + -7y = 14y
-10 + 14y = 18 + 7y + -7y

Combine like terms: 7y + -7y = 0
-10 + 14y = 18 + 0
-10 + 14y = 18

Add '10' to each side of the equation.
-10 + 10 + 14y = 18 + 10

Combine like terms: -10 + 10 = 0
0 + 14y = 18 + 10
14y = 18 + 10

Combine like terms: 18 + 10 = 28
14y = 28

Divide each side by '14'.
y = 2

Simplifying
y = 2

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