9a+2+10a=21

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Solution for 9a+2+10a=21 equation:


Simplifying
9a + 2 + 10a = 21

Reorder the terms:
2 + 9a + 10a = 21

Combine like terms: 9a + 10a = 19a
2 + 19a = 21

Solving
2 + 19a = 21

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 19a = 21 + -2

Combine like terms: 2 + -2 = 0
0 + 19a = 21 + -2
19a = 21 + -2

Combine like terms: 21 + -2 = 19
19a = 19

Divide each side by '19'.
a = 1

Simplifying
a = 1

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