3(7y-7)-(8y+7)=

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Solution for 3(7y-7)-(8y+7)= equation:


Simplifying
3(7y + -7) + -1(8y + 7) = 0

Reorder the terms:
3(-7 + 7y) + -1(8y + 7) = 0
(-7 * 3 + 7y * 3) + -1(8y + 7) = 0
(-21 + 21y) + -1(8y + 7) = 0

Reorder the terms:
-21 + 21y + -1(7 + 8y) = 0
-21 + 21y + (7 * -1 + 8y * -1) = 0
-21 + 21y + (-7 + -8y) = 0

Reorder the terms:
-21 + -7 + 21y + -8y = 0

Combine like terms: -21 + -7 = -28
-28 + 21y + -8y = 0

Combine like terms: 21y + -8y = 13y
-28 + 13y = 0

Solving
-28 + 13y = 0

Solving for variable 'y'.

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

Add '28' to each side of the equation.
-28 + 28 + 13y = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 13y = 0 + 28
13y = 0 + 28

Combine like terms: 0 + 28 = 28
13y = 28

Divide each side by '13'.
y = 2.153846154

Simplifying
y = 2.153846154

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