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\(=\dfrac{5\cdot6^{18}\cdot2^{12}-2\cdot2^{28}\cdot3^{14}\cdot3^4}{5\cdot2^{28}\cdot3^{18}-7\cdot2^{29}\cdot3^{18}}\)
\(=\dfrac{5\cdot2^{30}\cdot3^{18}-2^{29}\cdot3^{18}}{5\cdot2^{28}\cdot3^{18}-7\cdot2^{29}\cdot3^{18}}\)
\(=\dfrac{3^{18}\cdot2^{29}\left(5\cdot2-1\right)}{2^{28}\cdot3^{18}\left(5-7\cdot2\right)}=\dfrac{2\cdot9}{-9}=-2\)
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`@` `\text {Ans}`
`\downarrow`
`-75.57 + 75.34 - ( 57.34 - 57.75 )`
`= -75 . 57 + 75.34 - 57.34 + 57.75`
`= 75.( - 57 + 34 + 57) + 75.34`
`= 75.34 + 75.34`
`= (75.34) .2`
`= 2550 . 2`
`= 5100`
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\(-11.45 - (-11).25 - ( 29.3+29.17 )\)
`= -11. (45 - 25) - 29(3 + 17)`
`= -11.20 - 29.20`
`= 20. (-11 - 29)`
`= 20. (-40)`
`= -80`
_______
\(-12.7 -72.(-12) - ( 25.55-25.43 )\)
`= -12. (7 - 72) - 25( 55 - 43)`
`= -12.(-65) - 25.12`
`= 12.65 - 25 . 12`
`= 12(65 - 25)`
`= 12.40`
`= 480`
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\(M=\dfrac{5\cdot2^{18}\cdot3^{18}\cdot2^{12}-2\cdot2^{28}\cdot3^{14}\cdot3^6}{5\cdot2^{38}\cdot3^{19}-7\cdot2^{29}\cdot3^{18}}\)
\(=\dfrac{5\cdot2^{30}\cdot3^{18}-2^{29}\cdot3^{20}}{2^{28}\cdot3^{18}\left(5\cdot3-7\cdot2\right)}=\dfrac{2^{29}\cdot3^{18}\left(5\cdot2-3^2\right)}{2^{28}\cdot3^{18}}=2\)
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C = (29 . 3 + 29 . 5) : 212
C = (1536 + 2560) : 4096
C = 4096 : 4096
C = 1