12-21a+36=50-25a

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Solution for 12-21a+36=50-25a equation:


Simplifying
12 + -21a + 36 = 50 + -25a

Reorder the terms:
12 + 36 + -21a = 50 + -25a

Combine like terms: 12 + 36 = 48
48 + -21a = 50 + -25a

Solving
48 + -21a = 50 + -25a

Solving for variable 'a'.

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

Add '25a' to each side of the equation.
48 + -21a + 25a = 50 + -25a + 25a

Combine like terms: -21a + 25a = 4a
48 + 4a = 50 + -25a + 25a

Combine like terms: -25a + 25a = 0
48 + 4a = 50 + 0
48 + 4a = 50

Add '-48' to each side of the equation.
48 + -48 + 4a = 50 + -48

Combine like terms: 48 + -48 = 0
0 + 4a = 50 + -48
4a = 50 + -48

Combine like terms: 50 + -48 = 2
4a = 2

Divide each side by '4'.
a = 0.5

Simplifying
a = 0.5

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