2y+30+4y-30+90=180

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Solution for 2y+30+4y-30+90=180 equation:


Simplifying
2y + 30 + 4y + -30 + 90 = 180

Reorder the terms:
30 + -30 + 90 + 2y + 4y = 180

Combine like terms: 30 + -30 = 0
0 + 90 + 2y + 4y = 180
90 + 2y + 4y = 180

Combine like terms: 2y + 4y = 6y
90 + 6y = 180

Solving
90 + 6y = 180

Solving for variable 'y'.

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

Add '-90' to each side of the equation.
90 + -90 + 6y = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 6y = 180 + -90
6y = 180 + -90

Combine like terms: 180 + -90 = 90
6y = 90

Divide each side by '6'.
y = 15

Simplifying
y = 15

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