a-21+a-28=a+50

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Solution for a-21+a-28=a+50 equation:


Simplifying
a + -21 + a + -28 = a + 50

Reorder the terms:
-21 + -28 + a + a = a + 50

Combine like terms: -21 + -28 = -49
-49 + a + a = a + 50

Combine like terms: a + a = 2a
-49 + 2a = a + 50

Reorder the terms:
-49 + 2a = 50 + a

Solving
-49 + 2a = 50 + 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.
-49 + 2a + -1a = 50 + a + -1a

Combine like terms: 2a + -1a = 1a
-49 + 1a = 50 + a + -1a

Combine like terms: a + -1a = 0
-49 + 1a = 50 + 0
-49 + 1a = 50

Add '49' to each side of the equation.
-49 + 49 + 1a = 50 + 49

Combine like terms: -49 + 49 = 0
0 + 1a = 50 + 49
1a = 50 + 49

Combine like terms: 50 + 49 = 99
1a = 99

Divide each side by '1'.
a = 99

Simplifying
a = 99

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