3(y+9)=7y+31

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Solution for 3(y+9)=7y+31 equation:


Simplifying
3(y + 9) = 7y + 31

Reorder the terms:
3(9 + y) = 7y + 31
(9 * 3 + y * 3) = 7y + 31
(27 + 3y) = 7y + 31

Reorder the terms:
27 + 3y = 31 + 7y

Solving
27 + 3y = 31 + 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.
27 + 3y + -7y = 31 + 7y + -7y

Combine like terms: 3y + -7y = -4y
27 + -4y = 31 + 7y + -7y

Combine like terms: 7y + -7y = 0
27 + -4y = 31 + 0
27 + -4y = 31

Add '-27' to each side of the equation.
27 + -27 + -4y = 31 + -27

Combine like terms: 27 + -27 = 0
0 + -4y = 31 + -27
-4y = 31 + -27

Combine like terms: 31 + -27 = 4
-4y = 4

Divide each side by '-4'.
y = -1

Simplifying
y = -1

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