a*2-100=0

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Solution for a*2-100=0 equation:


Simplifying
a * 2 + -100 = 0

Reorder the terms for easier multiplication:
2a + -100 = 0

Reorder the terms:
-100 + 2a = 0

Solving
-100 + 2a = 0

Solving for variable 'a'.

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

Add '100' to each side of the equation.
-100 + 100 + 2a = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 2a = 0 + 100
2a = 0 + 100

Combine like terms: 0 + 100 = 100
2a = 100

Divide each side by '2'.
a = 50

Simplifying
a = 50

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