0.40(x+10)+0.20x=13

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Solution for 0.40(x+10)+0.20x=13 equation:


Simplifying
0.40(x + 10) + 0.20x = 13

Reorder the terms:
0.40(10 + x) + 0.20x = 13
(10 * 0.40 + x * 0.40) + 0.20x = 13
(4 + 0.40x) + 0.20x = 13

Combine like terms: 0.40x + 0.20x = 0.6x
4 + 0.6x = 13

Solving
4 + 0.6x = 13

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 0.6x = 13 + -4

Combine like terms: 4 + -4 = 0
0 + 0.6x = 13 + -4
0.6x = 13 + -4

Combine like terms: 13 + -4 = 9
0.6x = 9

Divide each side by '0.6'.
x = 15

Simplifying
x = 15

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