11(9-1)=7(9-y)

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Solution for 11(9-1)=7(9-y) equation:


Simplifying
11(9 + -1) = 7(9 + -1y)

Combine like terms: 9 + -1 = 8
11(8) = 7(9 + -1y)

Multiply 11 * 8
88 = 7(9 + -1y)
88 = (9 * 7 + -1y * 7)
88 = (63 + -7y)

Solving
88 = 63 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
88 + 7y = 63 + -7y + 7y

Combine like terms: -7y + 7y = 0
88 + 7y = 63 + 0
88 + 7y = 63

Add '-88' to each side of the equation.
88 + -88 + 7y = 63 + -88

Combine like terms: 88 + -88 = 0
0 + 7y = 63 + -88
7y = 63 + -88

Combine like terms: 63 + -88 = -25
7y = -25

Divide each side by '7'.
y = -3.571428571

Simplifying
y = -3.571428571

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