7+2a-1=30

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Solution for 7+2a-1=30 equation: 


Simplifying
7 + 2a + -1 = 30

Reorder the terms:
7 + -1 + 2a = 30

Combine like terms: 7 + -1 = 6
6 + 2a = 30

Solving
6 + 2a = 30

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 2a = 30 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 30 + -6
2a = 30 + -6

Combine like terms: 30 + -6 = 24
2a = 24

Divide each side by '2'.
a = 12

Simplifying
a = 12

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