8abc-(9-3abc)-(5abc-21)=

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Solution for 8abc-(9-3abc)-(5abc-21)= equation:


Simplifying
8abc + -1(9 + -3abc) + -1(5abc + -21) = 0
8abc + (9 * -1 + -3abc * -1) + -1(5abc + -21) = 0
8abc + (-9 + 3abc) + -1(5abc + -21) = 0

Reorder the terms:
8abc + -9 + 3abc + -1(-21 + 5abc) = 0
8abc + -9 + 3abc + (-21 * -1 + 5abc * -1) = 0
8abc + -9 + 3abc + (21 + -5abc) = 0

Reorder the terms:
-9 + 21 + 8abc + 3abc + -5abc = 0

Combine like terms: -9 + 21 = 12
12 + 8abc + 3abc + -5abc = 0

Combine like terms: 8abc + 3abc = 11abc
12 + 11abc + -5abc = 0

Combine like terms: 11abc + -5abc = 6abc
12 + 6abc = 0

Solving
12 + 6abc = 0

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 6abc = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 6abc = 0 + -12
6abc = 0 + -12

Combine like terms: 0 + -12 = -12
6abc = -12

Divide each side by '6bc'.
a = -2b-1c-1

Simplifying
a = -2b-1c-1

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