685=x+3(.2*x)

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Solution for 685=x+3(.2*x) equation:


Simplifying
685 = x + 3(0.2x)

Remove parenthesis around (0.2x)
685 = x + 3 * 0.2x

Multiply 3 * 0.2
685 = x + 0.6x

Combine like terms: x + 0.6x = 1.6x
685 = 1.6x

Solving
685 = 1.6x

Solving for variable 'x'.

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

Add '-1.6x' to each side of the equation.
685 + -1.6x = 1.6x + -1.6x

Combine like terms: 1.6x + -1.6x = 0.0
685 + -1.6x = 0.0

Add '-685' to each side of the equation.
685 + -685 + -1.6x = 0.0 + -685

Combine like terms: 685 + -685 = 0
0 + -1.6x = 0.0 + -685
-1.6x = 0.0 + -685

Combine like terms: 0.0 + -685 = -685
-1.6x = -685

Divide each side by '-1.6'.
x = 428.125

Simplifying
x = 428.125

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