4-3a=40

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Solution for 4-3a=40 equation: 


Simplifying
4 + -3a = 40

Solving
4 + -3a = 40

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 + -4 + -3a = 40 + -4

Combine like terms: 4 + -4 = 0
0 + -3a = 40 + -4
-3a = 40 + -4

Combine like terms: 40 + -4 = 36
-3a = 36

Divide each side by '-3'.
a = -12

Simplifying
a = -12

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