5y-15=4y-7

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Solution for 5y-15=4y-7 equation:


Simplifying
5y + -15 = 4y + -7

Reorder the terms:
-15 + 5y = 4y + -7

Reorder the terms:
-15 + 5y = -7 + 4y

Solving
-15 + 5y = -7 + 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 + 5y + -4y = -7 + 4y + -4y

Combine like terms: 5y + -4y = 1y
-15 + 1y = -7 + 4y + -4y

Combine like terms: 4y + -4y = 0
-15 + 1y = -7 + 0
-15 + 1y = -7

Add '15' to each side of the equation.
-15 + 15 + 1y = -7 + 15

Combine like terms: -15 + 15 = 0
0 + 1y = -7 + 15
1y = -7 + 15

Combine like terms: -7 + 15 = 8
1y = 8

Divide each side by '1'.
y = 8

Simplifying
y = 8

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