4a+3=a+15

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Solution for 4a+3=a+15 equation:


Simplifying
4a + 3 = a + 15

Reorder the terms:
3 + 4a = a + 15

Reorder the terms:
3 + 4a = 15 + a

Solving
3 + 4a = 15 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
3 + 4a + -1a = 15 + a + -1a

Combine like terms: 4a + -1a = 3a
3 + 3a = 15 + a + -1a

Combine like terms: a + -1a = 0
3 + 3a = 15 + 0
3 + 3a = 15

Add '-3' to each side of the equation.
3 + -3 + 3a = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 3a = 15 + -3
3a = 15 + -3

Combine like terms: 15 + -3 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4

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