9a-7a+7-4=

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


Simplifying
9a + -7a + 7 + -4 = 0

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

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

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

Solving
3 + 2a = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 2a = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 2a = 0 + -3
2a = 0 + -3

Combine like terms: 0 + -3 = -3
2a = -3

Divide each side by '2'.
a = -1.5

Simplifying
a = -1.5

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