-3(1+7a)=-a+17

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Solution for -3(1+7a)=-a+17 equation:


Simplifying
-3(1 + 7a) = -1a + 17
(1 * -3 + 7a * -3) = -1a + 17
(-3 + -21a) = -1a + 17

Reorder the terms:
-3 + -21a = 17 + -1a

Solving
-3 + -21a = 17 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-3 + -21a + a = 17 + -1a + a

Combine like terms: -21a + a = -20a
-3 + -20a = 17 + -1a + a

Combine like terms: -1a + a = 0
-3 + -20a = 17 + 0
-3 + -20a = 17

Add '3' to each side of the equation.
-3 + 3 + -20a = 17 + 3

Combine like terms: -3 + 3 = 0
0 + -20a = 17 + 3
-20a = 17 + 3

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

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

Simplifying
a = -1

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