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1+\frac{0.05-x}{0.08+1.6x}\geq 0.55
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
\frac{0.05-x}{0.08+1.6x}\geq 0.55-1
Subtract 1 from both sides.
\frac{0.05-x}{0.08+1.6x}\geq -0.45
Subtract 1 from 0.55 to get -0.45.
0.08+1.6x>0 0.08+1.6x<0
Denominator 0.08+1.6x cannot be zero since division by zero is not defined. There are two cases.
1.6x>-0.08
Consider the case when 0.08+1.6x is positive. Move 0.08 to the right hand side.
x>-0.05
Divide both sides by 1.6. Since 1.6 is positive, the inequality direction remains the same.
0.05-x\geq -0.45\left(0.08+1.6x\right)
The initial inequality does not change the direction when multiplied by 0.08+1.6x for 0.08+1.6x>0.
0.05-x\geq -0.036-0.72x
Multiply out the right hand side.
-x+0.72x\geq -0.05-0.036
Move the terms containing x to the left hand side and all other terms to the right hand side.
-0.28x\geq -0.086
Combine like terms.
x\leq \frac{43}{140}
Divide both sides by -0.28. Since -0.28 is negative, the inequality direction is changed.
x\in (-0.05,\frac{43}{140}]
Consider condition x>-0.05 specified above.
1.6x<-0.08
Now consider the case when 0.08+1.6x is negative. Move 0.08 to the right hand side.
x<-0.05
Divide both sides by 1.6. Since 1.6 is positive, the inequality direction remains the same.
0.05-x\leq -0.45\left(0.08+1.6x\right)
The initial inequality changes the direction when multiplied by 0.08+1.6x for 0.08+1.6x<0.
0.05-x\leq -0.036-0.72x
Multiply out the right hand side.
-x+0.72x\leq -0.05-0.036
Move the terms containing x to the left hand side and all other terms to the right hand side.
-0.28x\leq -0.086
Combine like terms.
x\geq \frac{43}{140}
Divide both sides by -0.28. Since -0.28 is negative, the inequality direction is changed.
x\in \emptyset
Consider condition x<-0.05 specified above.
x\in (-0.05,\frac{43}{140}]
The final solution is the union of the obtained solutions.