2(a-9)=30

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Solution for 2(a-9)=30 equation: 


Simplifying
2(a + -9) = 30

Reorder the terms:
2(-9 + a) = 30
(-9 * 2 + a * 2) = 30
(-18 + 2a) = 30

Solving
-18 + 2a = 30

Solving for variable 'a'.

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

Add '18' to each side of the equation.
-18 + 18 + 2a = 30 + 18

Combine like terms: -18 + 18 = 0
0 + 2a = 30 + 18
2a = 30 + 18

Combine like terms: 30 + 18 = 48
2a = 48

Divide each side by '2'.
a = 24

Simplifying
a = 24

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