0.40x+0.05(20-x)=0.10(3)

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Solution for 0.40x+0.05(20-x)=0.10(3) equation:


Simplifying
0.40x + 0.05(20 + -1x) = 0.10(3)
0.40x + (20 * 0.05 + -1x * 0.05) = 0.10(3)
0.40x + (1 + -0.05x) = 0.10(3)

Reorder the terms:
1 + 0.40x + -0.05x = 0.10(3)

Combine like terms: 0.40x + -0.05x = 0.35x
1 + 0.35x = 0.10(3)

Multiply 0.10 * 3
1 + 0.35x = 0.3

Solving
1 + 0.35x = 0.3

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 0.35x = 0.3 + -1

Combine like terms: 1 + -1 = 0
0 + 0.35x = 0.3 + -1
0.35x = 0.3 + -1

Combine like terms: 0.3 + -1 = -0.7
0.35x = -0.7

Divide each side by '0.35'.
x = -2

Simplifying
x = -2

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