-3(5+4a)=31

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Solution for -3(5+4a)=31 equation: 


Simplifying
-3(5 + 4a) = 31
(5 * -3 + 4a * -3) = 31
(-15 + -12a) = 31

Solving
-15 + -12a = 31

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + -12a = 31 + 15

Combine like terms: -15 + 15 = 0
0 + -12a = 31 + 15
-12a = 31 + 15

Combine like terms: 31 + 15 = 46
-12a = 46

Divide each side by '-12'.
a = -3.833333333

Simplifying
a = -3.833333333

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