5a-7b+-a+4b-9=

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Solution for 5a-7b+-a+4b-9= equation:


Simplifying
5a + -7b + -1a + 4b + -9 = 0

Reorder the terms:
-9 + 5a + -1a + -7b + 4b = 0

Combine like terms: 5a + -1a = 4a
-9 + 4a + -7b + 4b = 0

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

Solving
-9 + 4a + -3b = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 4a + 9 + -3b = 0 + 9

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

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

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

Add '3b' to each side of the equation.
4a + -3b + 3b = 9 + 3b

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

Divide each side by '4'.
a = 2.25 + 0.75b

Simplifying
a = 2.25 + 0.75b

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