Substitute the values for $a=1$ and $b=-1$ to find the value of given expression.

$\left|\frac{a+\left|b\right|}{b-\left|a\right|}\right|$

Substitute the values for $a=1$ and $b=-1$ to find the value of following expression.

$\frac{a+\left|b\right|}{a-\left|b\right|}$

Substitute the values for $a=1$ and $b=-1$ to find the value of given expression.

$\left|a^3-\right|b^{11}\Vert$

Determine values of $b$ for which $|8-b|-|b-3|$ is a positive number.

Find the measurement that has the largest absolute error.

$500 \mathrm{kg}$ measured with a percentage error of $1\%$  [Enter the value excluding units]