9y-3(y+4)=18

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Solution for 9y-3(y+4)=18 equation:


Simplifying
9y + -3(y + 4) = 18

Reorder the terms:
9y + -3(4 + y) = 18
9y + (4 * -3 + y * -3) = 18
9y + (-12 + -3y) = 18

Reorder the terms:
-12 + 9y + -3y = 18

Combine like terms: 9y + -3y = 6y
-12 + 6y = 18

Solving
-12 + 6y = 18

Solving for variable 'y'.

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

Add '12' to each side of the equation.
-12 + 12 + 6y = 18 + 12

Combine like terms: -12 + 12 = 0
0 + 6y = 18 + 12
6y = 18 + 12

Combine like terms: 18 + 12 = 30
6y = 30

Divide each side by '6'.
y = 5

Simplifying
y = 5

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