10a=3a+21

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Solution for 10a=3a+21 equation: 


Simplifying
10a = 3a + 21

Reorder the terms:
10a = 21 + 3a

Solving
10a = 21 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
10a + -3a = 21 + 3a + -3a

Combine like terms: 10a + -3a = 7a
7a = 21 + 3a + -3a

Combine like terms: 3a + -3a = 0
7a = 21 + 0
7a = 21

Divide each side by '7'.
a = 3

Simplifying
a = 3

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