-5(2a+8b-5)-3(-9b-5a+7)=

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Solution for -5(2a+8b-5)-3(-9b-5a+7)= equation:


Simplifying
-5(2a + 8b + -5) + -3(-9b + -5a + 7) = 0

Reorder the terms:
-5(-5 + 2a + 8b) + -3(-9b + -5a + 7) = 0
(-5 * -5 + 2a * -5 + 8b * -5) + -3(-9b + -5a + 7) = 0
(25 + -10a + -40b) + -3(-9b + -5a + 7) = 0

Reorder the terms:
25 + -10a + -40b + -3(7 + -5a + -9b) = 0
25 + -10a + -40b + (7 * -3 + -5a * -3 + -9b * -3) = 0
25 + -10a + -40b + (-21 + 15a + 27b) = 0

Reorder the terms:
25 + -21 + -10a + 15a + -40b + 27b = 0

Combine like terms: 25 + -21 = 4
4 + -10a + 15a + -40b + 27b = 0

Combine like terms: -10a + 15a = 5a
4 + 5a + -40b + 27b = 0

Combine like terms: -40b + 27b = -13b
4 + 5a + -13b = 0

Solving
4 + 5a + -13b = 0

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + 5a + -4 + -13b = 0 + -4

Reorder the terms:
4 + -4 + 5a + -13b = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 5a + -13b = 0 + -4
5a + -13b = 0 + -4

Combine like terms: 0 + -4 = -4
5a + -13b = -4

Add '13b' to each side of the equation.
5a + -13b + 13b = -4 + 13b

Combine like terms: -13b + 13b = 0
5a + 0 = -4 + 13b
5a = -4 + 13b

Divide each side by '5'.
a = -0.8 + 2.6b

Simplifying
a = -0.8 + 2.6b

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