a-16-2a=a-21+3a

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Solution for a-16-2a=a-21+3a equation:


Simplifying
a + -16 + -2a = a + -21 + 3a

Reorder the terms:
-16 + a + -2a = a + -21 + 3a

Combine like terms: a + -2a = -1a
-16 + -1a = a + -21 + 3a

Reorder the terms:
-16 + -1a = -21 + a + 3a

Combine like terms: a + 3a = 4a
-16 + -1a = -21 + 4a

Solving
-16 + -1a = -21 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-16 + -1a + -4a = -21 + 4a + -4a

Combine like terms: -1a + -4a = -5a
-16 + -5a = -21 + 4a + -4a

Combine like terms: 4a + -4a = 0
-16 + -5a = -21 + 0
-16 + -5a = -21

Add '16' to each side of the equation.
-16 + 16 + -5a = -21 + 16

Combine like terms: -16 + 16 = 0
0 + -5a = -21 + 16
-5a = -21 + 16

Combine like terms: -21 + 16 = -5
-5a = -5

Divide each side by '-5'.
a = 1

Simplifying
a = 1

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