4a-2=72

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Solution for 4a-2=72 equation: 


Simplifying
4a + -2 = 72

Reorder the terms:
-2 + 4a = 72

Solving
-2 + 4a = 72

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + 4a = 72 + 2

Combine like terms: -2 + 2 = 0
0 + 4a = 72 + 2
4a = 72 + 2

Combine like terms: 72 + 2 = 74
4a = 74

Divide each side by '4'.
a = 18.5

Simplifying
a = 18.5

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