.25(x)+.10(x-7)=2.80

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Solution for .25(x)+.10(x-7)=2.80 equation: 


Simplifying
0.25(x) + 0.10(x + -7) = 2.80

Reorder the terms:
0.25x + 0.10(-7 + x) = 2.80
0.25x + (-7 * 0.10 + x * 0.10) = 2.80
0.25x + (-0.7 + 0.10x) = 2.80

Reorder the terms:
-0.7 + 0.25x + 0.10x = 2.80

Combine like terms: 0.25x + 0.10x = 0.35x
-0.7 + 0.35x = 2.80

Solving
-0.7 + 0.35x = 2.80

Solving for variable 'x'.

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

Add '0.7' to each side of the equation.
-0.7 + 0.7 + 0.35x = 2.80 + 0.7

Combine like terms: -0.7 + 0.7 = 0.0
0.0 + 0.35x = 2.80 + 0.7
0.35x = 2.80 + 0.7

Combine like terms: 2.80 + 0.7 = 3.5
0.35x = 3.5

Divide each side by '0.35'.
x = 10

Simplifying
x = 10

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