a+2+3a-4=180

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Solution for a+2+3a-4=180 equation:


Simplifying
a + 2 + 3a + -4 = 180

Reorder the terms:
2 + -4 + a + 3a = 180

Combine like terms: 2 + -4 = -2
-2 + a + 3a = 180

Combine like terms: a + 3a = 4a
-2 + 4a = 180

Solving
-2 + 4a = 180

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 = 180 + 2

Combine like terms: -2 + 2 = 0
0 + 4a = 180 + 2
4a = 180 + 2

Combine like terms: 180 + 2 = 182
4a = 182

Divide each side by '4'.
a = 45.5

Simplifying
a = 45.5

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