300-3a=72

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Solution for 300-3a=72 equation: 


Simplifying
300 + -3a = 72

Solving
300 + -3a = 72

Solving for variable 'a'.

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

Add '-300' to each side of the equation.
300 + -300 + -3a = 72 + -300

Combine like terms: 300 + -300 = 0
0 + -3a = 72 + -300
-3a = 72 + -300

Combine like terms: 72 + -300 = -228
-3a = -228

Divide each side by '-3'.
a = 76

Simplifying
a = 76

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