User:
 Rational numbers Evaluate variable expressions involving rational numbers Evaluate the expression t+|s| for $s=\frac{1}{10}$ and t=8. $t+|s|=8+|\frac{1}{10}|=8+\frac{1}{10}=\frac{80+1}{10}=\frac{81}{10}$ Evaluate the expression |t|-|s| for s=-10 and $t=-\frac{1}{6}$. $|t|-|s|=|-\frac{1}{6}|-|-10|=\frac{1}{6}-10=\frac{1-60}{10}=-\frac{59}{10}$