-8a+9a+-16a-(-17a)+-3a=20

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Solution for -8a+9a+-16a-(-17a)+-3a=20 equation: 


Simplifying
-8a + 9a + -16a + -1(-17a) + -3a = 20

Remove parenthesis around (-17a)
-8a + 9a + -16a + -1 * -17a + -3a = 20

Multiply -1 * -17
-8a + 9a + -16a + 17a + -3a = 20

Combine like terms: -8a + 9a = 1a
1a + -16a + 17a + -3a = 20

Combine like terms: 1a + -16a = -15a
-15a + 17a + -3a = 20

Combine like terms: -15a + 17a = 2a
2a + -3a = 20

Combine like terms: 2a + -3a = -1a
-1a = 20

Solving
-1a = 20

Solving for variable 'a'.

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

Divide each side by '-1'.
a = -20

Simplifying
a = -20

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