11a+9-4a=30

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Solution for 11a+9-4a=30 equation:


Simplifying
11a + 9 + -4a = 30

Reorder the terms:
9 + 11a + -4a = 30

Combine like terms: 11a + -4a = 7a
9 + 7a = 30

Solving
9 + 7a = 30

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 7a = 30 + -9

Combine like terms: 9 + -9 = 0
0 + 7a = 30 + -9
7a = 30 + -9

Combine like terms: 30 + -9 = 21
7a = 21

Divide each side by '7'.
a = 3

Simplifying
a = 3

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