12a+9=7a+11

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Solution for 12a+9=7a+11 equation:


Simplifying
12a + 9 = 7a + 11

Reorder the terms:
9 + 12a = 7a + 11

Reorder the terms:
9 + 12a = 11 + 7a

Solving
9 + 12a = 11 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
9 + 12a + -7a = 11 + 7a + -7a

Combine like terms: 12a + -7a = 5a
9 + 5a = 11 + 7a + -7a

Combine like terms: 7a + -7a = 0
9 + 5a = 11 + 0
9 + 5a = 11

Add '-9' to each side of the equation.
9 + -9 + 5a = 11 + -9

Combine like terms: 9 + -9 = 0
0 + 5a = 11 + -9
5a = 11 + -9

Combine like terms: 11 + -9 = 2
5a = 2

Divide each side by '5'.
a = 0.4

Simplifying
a = 0.4

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