3(a-4)=51

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Solution for 3(a-4)=51 equation: 


Simplifying
3(a + -4) = 51

Reorder the terms:
3(-4 + a) = 51
(-4 * 3 + a * 3) = 51
(-12 + 3a) = 51

Solving
-12 + 3a = 51

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 3a = 51 + 12

Combine like terms: -12 + 12 = 0
0 + 3a = 51 + 12
3a = 51 + 12

Combine like terms: 51 + 12 = 63
3a = 63

Divide each side by '3'.
a = 21

Simplifying
a = 21

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