3(a-1)=51

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Solution for 3(a-1)=51 equation: 


Simplifying
3(a + -1) = 51

Reorder the terms:
3(-1 + a) = 51
(-1 * 3 + a * 3) = 51
(-3 + 3a) = 51

Solving
-3 + 3a = 51

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 = 51 + 3

Combine like terms: -3 + 3 = 0
0 + 3a = 51 + 3
3a = 51 + 3

Combine like terms: 51 + 3 = 54
3a = 54

Divide each side by '3'.
a = 18

Simplifying
a = 18

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