300=280+.25x

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Solution for 300=280+.25x equation:


Simplifying
300 = 280 + 0.25x

Solving
300 = 280 + 0.25x

Solving for variable 'x'.

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

Add '-0.25x' to each side of the equation.
300 + -0.25x = 280 + 0.25x + -0.25x

Combine like terms: 0.25x + -0.25x = 0.00
300 + -0.25x = 280 + 0.00
300 + -0.25x = 280

Add '-300' to each side of the equation.
300 + -300 + -0.25x = 280 + -300

Combine like terms: 300 + -300 = 0
0 + -0.25x = 280 + -300
-0.25x = 280 + -300

Combine like terms: 280 + -300 = -20
-0.25x = -20

Divide each side by '-0.25'.
x = 80

Simplifying
x = 80

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