-3y-13=4y+15

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Solution for -3y-13=4y+15 equation:


Simplifying
-3y + -13 = 4y + 15

Reorder the terms:
-13 + -3y = 4y + 15

Reorder the terms:
-13 + -3y = 15 + 4y

Solving
-13 + -3y = 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.
-13 + -3y + -4y = 15 + 4y + -4y

Combine like terms: -3y + -4y = -7y
-13 + -7y = 15 + 4y + -4y

Combine like terms: 4y + -4y = 0
-13 + -7y = 15 + 0
-13 + -7y = 15

Add '13' to each side of the equation.
-13 + 13 + -7y = 15 + 13

Combine like terms: -13 + 13 = 0
0 + -7y = 15 + 13
-7y = 15 + 13

Combine like terms: 15 + 13 = 28
-7y = 28

Divide each side by '-7'.
y = -4

Simplifying
y = -4

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