-100a+400=0

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Solution for -100a+400=0 equation: 


Simplifying
-100a + 400 = 0

Reorder the terms:
400 + -100a = 0

Solving
400 + -100a = 0

Solving for variable 'a'.

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

Add '-400' to each side of the equation.
400 + -400 + -100a = 0 + -400

Combine like terms: 400 + -400 = 0
0 + -100a = 0 + -400
-100a = 0 + -400

Combine like terms: 0 + -400 = -400
-100a = -400

Divide each side by '-100'.
a = 4

Simplifying
a = 4

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