87y+300=100y-90

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Solution for 87y+300=100y-90 equation:


Simplifying
87y + 300 = 100y + -90

Reorder the terms:
300 + 87y = 100y + -90

Reorder the terms:
300 + 87y = -90 + 100y

Solving
300 + 87y = -90 + 100y

Solving for variable 'y'.

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

Add '-100y' to each side of the equation.
300 + 87y + -100y = -90 + 100y + -100y

Combine like terms: 87y + -100y = -13y
300 + -13y = -90 + 100y + -100y

Combine like terms: 100y + -100y = 0
300 + -13y = -90 + 0
300 + -13y = -90

Add '-300' to each side of the equation.
300 + -300 + -13y = -90 + -300

Combine like terms: 300 + -300 = 0
0 + -13y = -90 + -300
-13y = -90 + -300

Combine like terms: -90 + -300 = -390
-13y = -390

Divide each side by '-13'.
y = 30

Simplifying
y = 30

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