13=7+3-7y

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Solution for 13=7+3-7y equation:


Simplifying
13 = 7 + 3 + -7y

Combine like terms: 7 + 3 = 10
13 = 10 + -7y

Solving
13 = 10 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
13 + 7y = 10 + -7y + 7y

Combine like terms: -7y + 7y = 0
13 + 7y = 10 + 0
13 + 7y = 10

Add '-13' to each side of the equation.
13 + -13 + 7y = 10 + -13

Combine like terms: 13 + -13 = 0
0 + 7y = 10 + -13
7y = 10 + -13

Combine like terms: 10 + -13 = -3
7y = -3

Divide each side by '7'.
y = -0.4285714286

Simplifying
y = -0.4285714286

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