2y-9+4y+21=180

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Solution for 2y-9+4y+21=180 equation:


Simplifying
2y + -9 + 4y + 21 = 180

Reorder the terms:
-9 + 21 + 2y + 4y = 180

Combine like terms: -9 + 21 = 12
12 + 2y + 4y = 180

Combine like terms: 2y + 4y = 6y
12 + 6y = 180

Solving
12 + 6y = 180

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 6y = 180 + -12

Combine like terms: 12 + -12 = 0
0 + 6y = 180 + -12
6y = 180 + -12

Combine like terms: 180 + -12 = 168
6y = 168

Divide each side by '6'.
y = 28

Simplifying
y = 28

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