-8(a-7)-4(a-1)=9a-6a

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Solution for -8(a-7)-4(a-1)=9a-6a equation:


Simplifying
-8(a + -7) + -4(a + -1) = 9a + -6a

Reorder the terms:
-8(-7 + a) + -4(a + -1) = 9a + -6a
(-7 * -8 + a * -8) + -4(a + -1) = 9a + -6a
(56 + -8a) + -4(a + -1) = 9a + -6a

Reorder the terms:
56 + -8a + -4(-1 + a) = 9a + -6a
56 + -8a + (-1 * -4 + a * -4) = 9a + -6a
56 + -8a + (4 + -4a) = 9a + -6a

Reorder the terms:
56 + 4 + -8a + -4a = 9a + -6a

Combine like terms: 56 + 4 = 60
60 + -8a + -4a = 9a + -6a

Combine like terms: -8a + -4a = -12a
60 + -12a = 9a + -6a

Combine like terms: 9a + -6a = 3a
60 + -12a = 3a

Solving
60 + -12a = 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
60 + -12a + -3a = 3a + -3a

Combine like terms: -12a + -3a = -15a
60 + -15a = 3a + -3a

Combine like terms: 3a + -3a = 0
60 + -15a = 0

Add '-60' to each side of the equation.
60 + -60 + -15a = 0 + -60

Combine like terms: 60 + -60 = 0
0 + -15a = 0 + -60
-15a = 0 + -60

Combine like terms: 0 + -60 = -60
-15a = -60

Divide each side by '-15'.
a = 4

Simplifying
a = 4

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