3a+(-75)=225

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Solution for 3a+(-75)=225 equation: 


Simplifying
3a + (-75) = 225
3a + -75 = 225

Reorder the terms:
-75 + 3a = 225

Solving
-75 + 3a = 225

Solving for variable 'a'.

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

Add '75' to each side of the equation.
-75 + 75 + 3a = 225 + 75

Combine like terms: -75 + 75 = 0
0 + 3a = 225 + 75
3a = 225 + 75

Combine like terms: 225 + 75 = 300
3a = 300

Divide each side by '3'.
a = 100

Simplifying
a = 100

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