5-4a=a-15

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


Simplifying
5 + -4a = a + -15

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

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

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

Combine like terms: a + -1a = 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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