3(a-2)=4.2

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Solution for 3(a-2)=4.2 equation: 


Simplifying
3(a + -2) = 4.2

Reorder the terms:
3(-2 + a) = 4.2
(-2 * 3 + a * 3) = 4.2
(-6 + 3a) = 4.2

Solving
-6 + 3a = 4.2

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 3a = 4.2 + 6

Combine like terms: -6 + 6 = 0
0 + 3a = 4.2 + 6
3a = 4.2 + 6

Combine like terms: 4.2 + 6 = 10.2
3a = 10.2

Divide each side by '3'.
a = 3.4

Simplifying
a = 3.4

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