1/
a) `13-98+91+(-75)+|-18|`
`=13-98+91-75+18`
`=-51`
b)
`|-48|+32+(-77)-(-16)`
`=48+32-77+16`
`=19`
2/
a)
`|x-2|-17=33`
`⇒|x-2|=50`
`⇒`\(\left[ \begin{array}{l}x-2=50\\x-2=-50\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x=52\\x=-48\end{array} \right.\)
b)
`|2x|-6+7=|11|`
`⇒|2x|+1=11`
`⇒|2x|=10`
`⇒`\(\left[ \begin{array}{l}2x=10\\2x=-10\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x=5\\x=-5\end{array} \right.\)