7a+2a-4a=-45

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Solution for 7a+2a-4a=-45 equation: 


Simplifying
7a + 2a + -4a = -45

Combine like terms: 7a + 2a = 9a
9a + -4a = -45

Combine like terms: 9a + -4a = 5a
5a = -45

Solving
5a = -45

Solving for variable 'a'.

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

Divide each side by '5'.
a = -9

Simplifying
a = -9

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