0.40x+0.05(8-x)=0.10(-31)

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Solution for 0.40x+0.05(8-x)=0.10(-31) equation: 


Simplifying
0.40x + 0.05(8 + -1x) = 0.10(-31)
0.40x + (8 * 0.05 + -1x * 0.05) = 0.10(-31)
0.40x + (0.4 + -0.05x) = 0.10(-31)

Reorder the terms:
0.4 + 0.40x + -0.05x = 0.10(-31)

Combine like terms: 0.40x + -0.05x = 0.35x
0.4 + 0.35x = 0.10(-31)

Multiply 0.10 * -31
0.4 + 0.35x = -3.1

Solving
0.4 + 0.35x = -3.1

Solving for variable 'x'.

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + 0.35x = -3.1 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.35x = -3.1 + -0.4
0.35x = -3.1 + -0.4

Combine like terms: -3.1 + -0.4 = -3.5
0.35x = -3.5

Divide each side by '0.35'.
x = -10

Simplifying
x = -10

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