(3a-7b+8c)+(a-9b+10c)+(-9+8b-11c)=

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Solution for (3a-7b+8c)+(a-9b+10c)+(-9+8b-11c)= equation:


Simplifying
(3a + -7b + 8c) + (a + -9b + 10c) + (-9 + 8b + -11c) = 0

Remove parenthesis around (3a + -7b + 8c)
3a + -7b + 8c + (a + -9b + 10c) + (-9 + 8b + -11c) = 0

Remove parenthesis around (a + -9b + 10c)
3a + -7b + 8c + a + -9b + 10c + (-9 + 8b + -11c) = 0

Remove parenthesis around (-9 + 8b + -11c)
3a + -7b + 8c + a + -9b + 10c + -9 + 8b + -11c = 0

Reorder the terms:
-9 + 3a + a + -7b + -9b + 8b + 8c + 10c + -11c = 0

Combine like terms: 3a + a = 4a
-9 + 4a + -7b + -9b + 8b + 8c + 10c + -11c = 0

Combine like terms: -7b + -9b = -16b
-9 + 4a + -16b + 8b + 8c + 10c + -11c = 0

Combine like terms: -16b + 8b = -8b
-9 + 4a + -8b + 8c + 10c + -11c = 0

Combine like terms: 8c + 10c = 18c
-9 + 4a + -8b + 18c + -11c = 0

Combine like terms: 18c + -11c = 7c
-9 + 4a + -8b + 7c = 0

Solving
-9 + 4a + -8b + 7c = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 4a + -8b + 9 + 7c = 0 + 9

Reorder the terms:
-9 + 9 + 4a + -8b + 7c = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 4a + -8b + 7c = 0 + 9
4a + -8b + 7c = 0 + 9

Combine like terms: 0 + 9 = 9
4a + -8b + 7c = 9

Add '8b' to each side of the equation.
4a + -8b + 8b + 7c = 9 + 8b

Combine like terms: -8b + 8b = 0
4a + 0 + 7c = 9 + 8b
4a + 7c = 9 + 8b

Add '-7c' to each side of the equation.
4a + 7c + -7c = 9 + 8b + -7c

Combine like terms: 7c + -7c = 0
4a + 0 = 9 + 8b + -7c
4a = 9 + 8b + -7c

Divide each side by '4'.
a = 2.25 + 2b + -1.75c

Simplifying
a = 2.25 + 2b + -1.75c

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