-13=7+4y

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Solution for -13=7+4y equation:


Simplifying
-13 = 7 + 4y

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

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

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

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

Combine like terms: 7 + 13 = 20
-4y = 20

Divide each side by '-4'.
y = -5

Simplifying
y = -5

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