-9=8(7-y)-7

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Solution for -9=8(7-y)-7 equation:


Simplifying
-9 = 8(7 + -1y) + -7
-9 = (7 * 8 + -1y * 8) + -7
-9 = (56 + -8y) + -7

Reorder the terms:
-9 = 56 + -7 + -8y

Combine like terms: 56 + -7 = 49
-9 = 49 + -8y

Solving
-9 = 49 + -8y

Solving for variable 'y'.

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

Add '8y' to each side of the equation.
-9 + 8y = 49 + -8y + 8y

Combine like terms: -8y + 8y = 0
-9 + 8y = 49 + 0
-9 + 8y = 49

Add '9' to each side of the equation.
-9 + 9 + 8y = 49 + 9

Combine like terms: -9 + 9 = 0
0 + 8y = 49 + 9
8y = 49 + 9

Combine like terms: 49 + 9 = 58
8y = 58

Divide each side by '8'.
y = 7.25

Simplifying
y = 7.25

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