-5+2a-8a=42

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Solution for -5+2a-8a=42 equation: 


Simplifying
-5 + 2a + -8a = 42

Combine like terms: 2a + -8a = -6a
-5 + -6a = 42

Solving
-5 + -6a = 42

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + -6a = 42 + 5

Combine like terms: -5 + 5 = 0
0 + -6a = 42 + 5
-6a = 42 + 5

Combine like terms: 42 + 5 = 47
-6a = 47

Divide each side by '-6'.
a = -7.833333333

Simplifying
a = -7.833333333

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