3a+4b+9a-7+2b=

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Solution for 3a+4b+9a-7+2b= equation:


Simplifying
3a + 4b + 9a + -7 + 2b = 0

Reorder the terms:
-7 + 3a + 9a + 4b + 2b = 0

Combine like terms: 3a + 9a = 12a
-7 + 12a + 4b + 2b = 0

Combine like terms: 4b + 2b = 6b
-7 + 12a + 6b = 0

Solving
-7 + 12a + 6b = 0

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 12a + 7 + 6b = 0 + 7

Reorder the terms:
-7 + 7 + 12a + 6b = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 12a + 6b = 0 + 7
12a + 6b = 0 + 7

Combine like terms: 0 + 7 = 7
12a + 6b = 7

Add '-6b' to each side of the equation.
12a + 6b + -6b = 7 + -6b

Combine like terms: 6b + -6b = 0
12a + 0 = 7 + -6b
12a = 7 + -6b

Divide each side by '12'.
a = 0.5833333333 + -0.5b

Simplifying
a = 0.5833333333 + -0.5b

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