7(3y-9)-(3y+6)=

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Solution for 7(3y-9)-(3y+6)= equation:


Simplifying
7(3y + -9) + -1(3y + 6) = 0

Reorder the terms:
7(-9 + 3y) + -1(3y + 6) = 0
(-9 * 7 + 3y * 7) + -1(3y + 6) = 0
(-63 + 21y) + -1(3y + 6) = 0

Reorder the terms:
-63 + 21y + -1(6 + 3y) = 0
-63 + 21y + (6 * -1 + 3y * -1) = 0
-63 + 21y + (-6 + -3y) = 0

Reorder the terms:
-63 + -6 + 21y + -3y = 0

Combine like terms: -63 + -6 = -69
-69 + 21y + -3y = 0

Combine like terms: 21y + -3y = 18y
-69 + 18y = 0

Solving
-69 + 18y = 0

Solving for variable 'y'.

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

Add '69' to each side of the equation.
-69 + 69 + 18y = 0 + 69

Combine like terms: -69 + 69 = 0
0 + 18y = 0 + 69
18y = 0 + 69

Combine like terms: 0 + 69 = 69
18y = 69

Divide each side by '18'.
y = 3.833333333

Simplifying
y = 3.833333333

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