7a-9=2a+1

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Solution for 7a-9=2a+1 equation:


Simplifying
7a + -9 = 2a + 1

Reorder the terms:
-9 + 7a = 2a + 1

Reorder the terms:
-9 + 7a = 1 + 2a

Solving
-9 + 7a = 1 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-9 + 7a + -2a = 1 + 2a + -2a

Combine like terms: 7a + -2a = 5a
-9 + 5a = 1 + 2a + -2a

Combine like terms: 2a + -2a = 0
-9 + 5a = 1 + 0
-9 + 5a = 1

Add '9' to each side of the equation.
-9 + 9 + 5a = 1 + 9

Combine like terms: -9 + 9 = 0
0 + 5a = 1 + 9
5a = 1 + 9

Combine like terms: 1 + 9 = 10
5a = 10

Divide each side by '5'.
a = 2

Simplifying
a = 2

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