7y+4+21=12y

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Solution for 7y+4+21=12y equation:


Simplifying
7y + 4 + 21 = 12y

Reorder the terms:
4 + 21 + 7y = 12y

Combine like terms: 4 + 21 = 25
25 + 7y = 12y

Solving
25 + 7y = 12y

Solving for variable 'y'.

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

Add '-12y' to each side of the equation.
25 + 7y + -12y = 12y + -12y

Combine like terms: 7y + -12y = -5y
25 + -5y = 12y + -12y

Combine like terms: 12y + -12y = 0
25 + -5y = 0

Add '-25' to each side of the equation.
25 + -25 + -5y = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -5y = 0 + -25
-5y = 0 + -25

Combine like terms: 0 + -25 = -25
-5y = -25

Divide each side by '-5'.
y = 5

Simplifying
y = 5

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