0.55x+0.45(4-x)=0.4(-1)

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Solution for 0.55x+0.45(4-x)=0.4(-1) equation: 


Simplifying
0.55x + 0.45(4 + -1x) = 0.4(-1)
0.55x + (4 * 0.45 + -1x * 0.45) = 0.4(-1)
0.55x + (1.8 + -0.45x) = 0.4(-1)

Reorder the terms:
1.8 + 0.55x + -0.45x = 0.4(-1)

Combine like terms: 0.55x + -0.45x = 0.1x
1.8 + 0.1x = 0.4(-1)

Multiply 0.4 * -1
1.8 + 0.1x = -0.4

Solving
1.8 + 0.1x = -0.4

Solving for variable 'x'.

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

Add '-1.8' to each side of the equation.
1.8 + -1.8 + 0.1x = -0.4 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + 0.1x = -0.4 + -1.8
0.1x = -0.4 + -1.8

Combine like terms: -0.4 + -1.8 = -2.2
0.1x = -2.2

Divide each side by '0.1'.
x = -22

Simplifying
x = -22

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