3(2a-7)+9=30

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Solution for 3(2a-7)+9=30 equation:


Simplifying
3(2a + -7) + 9 = 30

Reorder the terms:
3(-7 + 2a) + 9 = 30
(-7 * 3 + 2a * 3) + 9 = 30
(-21 + 6a) + 9 = 30

Reorder the terms:
-21 + 9 + 6a = 30

Combine like terms: -21 + 9 = -12
-12 + 6a = 30

Solving
-12 + 6a = 30

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 6a = 30 + 12

Combine like terms: -12 + 12 = 0
0 + 6a = 30 + 12
6a = 30 + 12

Combine like terms: 30 + 12 = 42
6a = 42

Divide each side by '6'.
a = 7

Simplifying
a = 7

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