`@` `\text {Ans}`
`\downarrow`
`(20+35) \times 33-45 \times 23-10 \times 23`
`= (20 + 35) \times 33 - 23 \times (45 + 10)`
`= (20 + 35) \times 33 - 23 \times 55`
`= 55 \times 33 - 23 \times 55`
`= 55 \times (33 - 23)`
`= 55 \times 10`
`= 550`
\(\left(20+35\right)\times33-45\times23-10\times23\)
\(=55\times33-45\times23-10\times23\)
\(=5\times\left(11\times33-9\times23-2\times23\right)\)
\(=5\times\left(363-207-46\right)\)
\(=5\times\left(363-253\right)\)
\(=5\times110\)
\(=550\)