7y-4=-8y-13

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Solution for 7y-4=-8y-13 equation:


Simplifying
7y + -4 = -8y + -13

Reorder the terms:
-4 + 7y = -8y + -13

Reorder the terms:
-4 + 7y = -13 + -8y

Solving
-4 + 7y = -13 + -8y

Solving for variable 'y'.

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

Add '8y' to each side of the equation.
-4 + 7y + 8y = -13 + -8y + 8y

Combine like terms: 7y + 8y = 15y
-4 + 15y = -13 + -8y + 8y

Combine like terms: -8y + 8y = 0
-4 + 15y = -13 + 0
-4 + 15y = -13

Add '4' to each side of the equation.
-4 + 4 + 15y = -13 + 4

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

Combine like terms: -13 + 4 = -9
15y = -9

Divide each side by '15'.
y = -0.6

Simplifying
y = -0.6

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