100-a=62

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Solution for 100-a=62 equation: 


Simplifying
100 + -1a = 62

Solving
100 + -1a = 62

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 + -1a = 62 + -100

Combine like terms: 100 + -100 = 0
0 + -1a = 62 + -100
-1a = 62 + -100

Combine like terms: 62 + -100 = -38
-1a = -38

Divide each side by '-1'.
a = 38

Simplifying
a = 38

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