Tính
(35 - 17) - (-17 + 20 + 35)
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(35+17)+(17+20-35)
=35+17+17+20-35
=(35-35)+(17+17+20)
=0+54
=54
tk m nha!
1; (-8537 ) + ( 1975 + 8537)
= - 8537 + 1975 + 8537
= (-8537 + 8537) + 1975
= 0 + 1975
= 1975
2; ( 35 - 17 ) - ( -17 + 20 + 35)
= 35 - 17 + 17 - 20 - 35
= ( 35 - 35) + ( -17 + 17) - 20
= 0 + 0 - 20
= - 20
(35-17)+(17+20-35)
=35-17+17+20-35
=(35-35)+(-17+17)+20
=0+0+20
=20
\(\frac{3}{17}+\frac{-5}{13}+\frac{-18}{35}+\frac{14}{17}+\frac{17}{-35}+\frac{-8}{13}\)
\(=\frac{3}{17}+\frac{-5}{13}+\frac{-18}{35}+\frac{14}{17}+\frac{-17}{35}+\frac{-8}{13}\)
\(=\left(\frac{3}{17}+\frac{14}{17}\right)+\left(\frac{-5}{13}+\frac{-8}{13}\right)+\left(\frac{-18}{35}+\frac{-17}{35}\right)\)
\(=\frac{17}{17}+\frac{-13}{13}+\frac{-35}{35}\)
\(=1+\left(-1\right)+\left(-1\right)\)
\(=-1\)
\(\frac{3}{17}+\frac{-5}{13}+\frac{-18}{35}+\frac{14}{17}+\frac{17}{-35}+\frac{-8}{13}\)
= \(\frac{3}{17}+\frac{-5}{13}+\frac{-18}{35}+\frac{14}{17}+\frac{-17}{35}+\frac{-8}{13}\)
= \(\left(\frac{3}{17}+\frac{14}{17}\right)+\left(\frac{-5}{13}+\frac{-8}{13}\right)+\frac{-18}{35}\)
= 1+(-1)+\(\frac{-18}{35}\)
= 0+\(\frac{-18}{35}\)
= \(\frac{-18}{35}\)
\(\frac{32}{17}:\frac{9}{2}+\frac{35}{17}:\frac{9}{3}+\frac{35}{17}:\frac{9}{4}\)
\(=\frac{32}{17}:\left(\frac{9}{2}+\frac{9}{3}+\frac{9}{4}\right)\)
\(=\frac{32}{17}:\frac{39}{4}\)
\(=\frac{128}{663}\)
(35 - 17) - (-17 + 20 + 35)
=35-17+17-20-35
=35-35-17+17-20
=-20
\(\left(35-17\right)-\left(-17+20+35\right)\\ =18-\left(3+35\right)\\ =18-38\\ =-20\)