0.90x+.05(20-x)=.10(-109)

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Solution for 0.90x+.05(20-x)=.10(-109) equation:


Simplifying
0.90x + 0.05(20 + -1x) = 0.10(-109)
0.90x + (20 * 0.05 + -1x * 0.05) = 0.10(-109)
0.90x + (1 + -0.05x) = 0.10(-109)

Reorder the terms:
1 + 0.90x + -0.05x = 0.10(-109)

Combine like terms: 0.90x + -0.05x = 0.85x
1 + 0.85x = 0.10(-109)

Multiply 0.10 * -109
1 + 0.85x = -10.9

Solving
1 + 0.85x = -10.9

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 + 0.85x = -10.9 + -1

Combine like terms: 1 + -1 = 0
0 + 0.85x = -10.9 + -1
0.85x = -10.9 + -1

Combine like terms: -10.9 + -1 = -11.9
0.85x = -11.9

Divide each side by '0.85'.
x = -14

Simplifying
x = -14

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