8a-8a=-11(11+9a)-11(-10a+10)

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Solution for 8a-8a=-11(11+9a)-11(-10a+10) equation:


Simplifying
8a + -8a = -11(11 + 9a) + -11(-10a + 10)

Combine like terms: 8a + -8a = 0
0 = -11(11 + 9a) + -11(-10a + 10)
0 = (11 * -11 + 9a * -11) + -11(-10a + 10)
0 = (-121 + -99a) + -11(-10a + 10)

Reorder the terms:
0 = -121 + -99a + -11(10 + -10a)
0 = -121 + -99a + (10 * -11 + -10a * -11)
0 = -121 + -99a + (-110 + 110a)

Reorder the terms:
0 = -121 + -110 + -99a + 110a

Combine like terms: -121 + -110 = -231
0 = -231 + -99a + 110a

Combine like terms: -99a + 110a = 11a
0 = -231 + 11a

Solving
0 = -231 + 11a

Solving for variable 'a'.

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

Add '-11a' to each side of the equation.
0 + -11a = -231 + 11a + -11a
Remove the zero:
-11a = -231 + 11a + -11a

Combine like terms: 11a + -11a = 0
-11a = -231 + 0
-11a = -231

Divide each side by '-11'.
a = 21

Simplifying
a = 21

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