-5(7+3a)+4(8-1a)=9

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Solution for -5(7+3a)+4(8-1a)=9 equation:


Simplifying
-5(7 + 3a) + 4(8 + -1a) = 9
(7 * -5 + 3a * -5) + 4(8 + -1a) = 9
(-35 + -15a) + 4(8 + -1a) = 9
-35 + -15a + (8 * 4 + -1a * 4) = 9
-35 + -15a + (32 + -4a) = 9

Reorder the terms:
-35 + 32 + -15a + -4a = 9

Combine like terms: -35 + 32 = -3
-3 + -15a + -4a = 9

Combine like terms: -15a + -4a = -19a
-3 + -19a = 9

Solving
-3 + -19a = 9

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + -19a = 9 + 3

Combine like terms: -3 + 3 = 0
0 + -19a = 9 + 3
-19a = 9 + 3

Combine like terms: 9 + 3 = 12
-19a = 12

Divide each side by '-19'.
a = -0.6315789474

Simplifying
a = -0.6315789474

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