5y-31=3(y-7)

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Solution for 5y-31=3(y-7) equation:


Simplifying
5y + -31 = 3(y + -7)

Reorder the terms:
-31 + 5y = 3(y + -7)

Reorder the terms:
-31 + 5y = 3(-7 + y)
-31 + 5y = (-7 * 3 + y * 3)
-31 + 5y = (-21 + 3y)

Solving
-31 + 5y = -21 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
-31 + 5y + -3y = -21 + 3y + -3y

Combine like terms: 5y + -3y = 2y
-31 + 2y = -21 + 3y + -3y

Combine like terms: 3y + -3y = 0
-31 + 2y = -21 + 0
-31 + 2y = -21

Add '31' to each side of the equation.
-31 + 31 + 2y = -21 + 31

Combine like terms: -31 + 31 = 0
0 + 2y = -21 + 31
2y = -21 + 31

Combine like terms: -21 + 31 = 10
2y = 10

Divide each side by '2'.
y = 5

Simplifying
y = 5

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