200-a=140

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Solution for 200-a=140 equation: 


Simplifying
200 + -1a = 140

Solving
200 + -1a = 140

Solving for variable 'a'.

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

Add '-200' to each side of the equation.
200 + -200 + -1a = 140 + -200

Combine like terms: 200 + -200 = 0
0 + -1a = 140 + -200
-1a = 140 + -200

Combine like terms: 140 + -200 = -60
-1a = -60

Divide each side by '-1'.
a = 60

Simplifying
a = 60

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