-5a+40+8a=2a-9a

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Solution for -5a+40+8a=2a-9a equation:


Simplifying
-5a + 40 + 8a = 2a + -9a

Reorder the terms:
40 + -5a + 8a = 2a + -9a

Combine like terms: -5a + 8a = 3a
40 + 3a = 2a + -9a

Combine like terms: 2a + -9a = -7a
40 + 3a = -7a

Solving
40 + 3a = -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
40 + 3a + 7a = -7a + 7a

Combine like terms: 3a + 7a = 10a
40 + 10a = -7a + 7a

Combine like terms: -7a + 7a = 0
40 + 10a = 0

Add '-40' to each side of the equation.
40 + -40 + 10a = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 10a = 0 + -40
10a = 0 + -40

Combine like terms: 0 + -40 = -40
10a = -40

Divide each side by '10'.
a = -4

Simplifying
a = -4

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