3y+15+4y=90+4y

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Solution for 3y+15+4y=90+4y equation:


Simplifying
3y + 15 + 4y = 90 + 4y

Reorder the terms:
15 + 3y + 4y = 90 + 4y

Combine like terms: 3y + 4y = 7y
15 + 7y = 90 + 4y

Solving
15 + 7y = 90 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
15 + 7y + -4y = 90 + 4y + -4y

Combine like terms: 7y + -4y = 3y
15 + 3y = 90 + 4y + -4y

Combine like terms: 4y + -4y = 0
15 + 3y = 90 + 0
15 + 3y = 90

Add '-15' to each side of the equation.
15 + -15 + 3y = 90 + -15

Combine like terms: 15 + -15 = 0
0 + 3y = 90 + -15
3y = 90 + -15

Combine like terms: 90 + -15 = 75
3y = 75

Divide each side by '3'.
y = 25

Simplifying
y = 25

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