-(8Y-4)-(-7Y-7)=1

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Solution for -(8Y-4)-(-7Y-7)=1 equation: 


Simplifying
-1(8Y + -4) + -1(-7Y + -7) = 1

Reorder the terms:
-1(-4 + 8Y) + -1(-7Y + -7) = 1
(-4 * -1 + 8Y * -1) + -1(-7Y + -7) = 1
(4 + -8Y) + -1(-7Y + -7) = 1

Reorder the terms:
4 + -8Y + -1(-7 + -7Y) = 1
4 + -8Y + (-7 * -1 + -7Y * -1) = 1
4 + -8Y + (7 + 7Y) = 1

Reorder the terms:
4 + 7 + -8Y + 7Y = 1

Combine like terms: 4 + 7 = 11
11 + -8Y + 7Y = 1

Combine like terms: -8Y + 7Y = -1Y
11 + -1Y = 1

Solving
11 + -1Y = 1

Solving for variable 'Y'.

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

Add '-11' to each side of the equation.
11 + -11 + -1Y = 1 + -11

Combine like terms: 11 + -11 = 0
0 + -1Y = 1 + -11
-1Y = 1 + -11

Combine like terms: 1 + -11 = -10
-1Y = -10

Divide each side by '-1'.
Y = 10

Simplifying
Y = 10

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