17a-20a-4a+4a=-18

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Solution for 17a-20a-4a+4a=-18 equation: 


Simplifying
17a + -20a + -4a + 4a = -18

Combine like terms: 17a + -20a = -3a
-3a + -4a + 4a = -18

Combine like terms: -3a + -4a = -7a
-7a + 4a = -18

Combine like terms: -7a + 4a = -3a
-3a = -18

Solving
-3a = -18

Solving for variable 'a'.

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

Divide each side by '-3'.
a = 6

Simplifying
a = 6

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