3(a-1)=36

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Solution for 3(a-1)=36 equation: 


Simplifying
3(a + -1) = 36

Reorder the terms:
3(-1 + a) = 36
(-1 * 3 + a * 3) = 36
(-3 + 3a) = 36

Solving
-3 + 3a = 36

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 3a = 36 + 3

Combine like terms: -3 + 3 = 0
0 + 3a = 36 + 3
3a = 36 + 3

Combine like terms: 36 + 3 = 39
3a = 39

Divide each side by '3'.
a = 13

Simplifying
a = 13

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