-3(a-4)+9=a+1

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Solution for -3(a-4)+9=a+1 equation:


Simplifying
-3(a + -4) + 9 = a + 1

Reorder the terms:
-3(-4 + a) + 9 = a + 1
(-4 * -3 + a * -3) + 9 = a + 1
(12 + -3a) + 9 = a + 1

Reorder the terms:
12 + 9 + -3a = a + 1

Combine like terms: 12 + 9 = 21
21 + -3a = a + 1

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

Solving
21 + -3a = 1 + a

Solving for variable 'a'.

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

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

Combine like terms: -3a + -1a = -4a
21 + -4a = 1 + a + -1a

Combine like terms: a + -1a = 0
21 + -4a = 1 + 0
21 + -4a = 1

Add '-21' to each side of the equation.
21 + -21 + -4a = 1 + -21

Combine like terms: 21 + -21 = 0
0 + -4a = 1 + -21
-4a = 1 + -21

Combine like terms: 1 + -21 = -20
-4a = -20

Divide each side by '-4'.
a = 5

Simplifying
a = 5

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