0.90x+.05(8-x)=.10(72)

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Solution for 0.90x+.05(8-x)=.10(72) equation:


Simplifying
0.90x + 0.05(8 + -1x) = 0.10(72)
0.90x + (8 * 0.05 + -1x * 0.05) = 0.10(72)
0.90x + (0.4 + -0.05x) = 0.10(72)

Reorder the terms:
0.4 + 0.90x + -0.05x = 0.10(72)

Combine like terms: 0.90x + -0.05x = 0.85x
0.4 + 0.85x = 0.10(72)

Multiply 0.10 * 72
0.4 + 0.85x = 7.2

Solving
0.4 + 0.85x = 7.2

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 + 0.85x = 7.2 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.85x = 7.2 + -0.4
0.85x = 7.2 + -0.4

Combine like terms: 7.2 + -0.4 = 6.8
0.85x = 6.8

Divide each side by '0.85'.
x = 8

Simplifying
x = 8

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