2y+9=3(y+7)

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Solution for 2y+9=3(y+7) equation:


Simplifying
2y + 9 = 3(y + 7)

Reorder the terms:
9 + 2y = 3(y + 7)

Reorder the terms:
9 + 2y = 3(7 + y)
9 + 2y = (7 * 3 + y * 3)
9 + 2y = (21 + 3y)

Solving
9 + 2y = 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.
9 + 2y + -3y = 21 + 3y + -3y

Combine like terms: 2y + -3y = -1y
9 + -1y = 21 + 3y + -3y

Combine like terms: 3y + -3y = 0
9 + -1y = 21 + 0
9 + -1y = 21

Add '-9' to each side of the equation.
9 + -9 + -1y = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -1y = 21 + -9
-1y = 21 + -9

Combine like terms: 21 + -9 = 12
-1y = 12

Divide each side by '-1'.
y = -12

Simplifying
y = -12

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