3a+a-15=225

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Solution for 3a+a-15=225 equation:


Simplifying
3a + a + -15 = 225

Reorder the terms:
-15 + 3a + a = 225

Combine like terms: 3a + a = 4a
-15 + 4a = 225

Solving
-15 + 4a = 225

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + 4a = 225 + 15

Combine like terms: -15 + 15 = 0
0 + 4a = 225 + 15
4a = 225 + 15

Combine like terms: 225 + 15 = 240
4a = 240

Divide each side by '4'.
a = 60

Simplifying
a = 60

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