4a-5=-a+15

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Solution for 4a-5=-a+15 equation:


Simplifying
4a + -5 = -1a + 15

Reorder the terms:
-5 + 4a = -1a + 15

Reorder the terms:
-5 + 4a = 15 + -1a

Solving
-5 + 4a = 15 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-5 + 4a + a = 15 + -1a + a

Combine like terms: 4a + a = 5a
-5 + 5a = 15 + -1a + a

Combine like terms: -1a + a = 0
-5 + 5a = 15 + 0
-5 + 5a = 15

Add '5' to each side of the equation.
-5 + 5 + 5a = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 5a = 15 + 5
5a = 15 + 5

Combine like terms: 15 + 5 = 20
5a = 20

Divide each side by '5'.
a = 4

Simplifying
a = 4

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