.30x+.05(8-x)=.10(9)

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Solution for .30x+.05(8-x)=.10(9) equation:


Simplifying
0.30x + 0.05(8 + -1x) = 0.10(9)
0.30x + (8 * 0.05 + -1x * 0.05) = 0.10(9)
0.30x + (0.4 + -0.05x) = 0.10(9)

Reorder the terms:
0.4 + 0.30x + -0.05x = 0.10(9)

Combine like terms: 0.30x + -0.05x = 0.25x
0.4 + 0.25x = 0.10(9)

Multiply 0.10 * 9
0.4 + 0.25x = 0.9

Solving
0.4 + 0.25x = 0.9

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 + 0.25x = 0.9 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.25x = 0.9 + -0.4
0.25x = 0.9 + -0.4

Combine like terms: 0.9 + -0.4 = 0.5
0.25x = 0.5

Divide each side by '0.25'.
x = 2

Simplifying
x = 2

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