8y-30=4y-15

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Solution for 8y-30=4y-15 equation:


Simplifying
8y + -30 = 4y + -15

Reorder the terms:
-30 + 8y = 4y + -15

Reorder the terms:
-30 + 8y = -15 + 4y

Solving
-30 + 8y = -15 + 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.
-30 + 8y + -4y = -15 + 4y + -4y

Combine like terms: 8y + -4y = 4y
-30 + 4y = -15 + 4y + -4y

Combine like terms: 4y + -4y = 0
-30 + 4y = -15 + 0
-30 + 4y = -15

Add '30' to each side of the equation.
-30 + 30 + 4y = -15 + 30

Combine like terms: -30 + 30 = 0
0 + 4y = -15 + 30
4y = -15 + 30

Combine like terms: -15 + 30 = 15
4y = 15

Divide each side by '4'.
y = 3.75

Simplifying
y = 3.75

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