5a=2a+21

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Solution for 5a=2a+21 equation: 


Simplifying
5a = 2a + 21

Reorder the terms:
5a = 21 + 2a

Solving
5a = 21 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
5a + -2a = 21 + 2a + -2a

Combine like terms: 5a + -2a = 3a
3a = 21 + 2a + -2a

Combine like terms: 2a + -2a = 0
3a = 21 + 0
3a = 21

Divide each side by '3'.
a = 7

Simplifying
a = 7

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