21-a+5a=5

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Solution for 21-a+5a=5 equation:


Simplifying
21 + -1a + 5a = 5

Combine like terms: -1a + 5a = 4a
21 + 4a = 5

Solving
21 + 4a = 5

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 4a = 5 + -21

Combine like terms: 21 + -21 = 0
0 + 4a = 5 + -21
4a = 5 + -21

Combine like terms: 5 + -21 = -16
4a = -16

Divide each side by '4'.
a = -4

Simplifying
a = -4

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