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(0,4 - [tex] \frac{3}{20} [/tex])·6 [tex]\frac{2}{3} [/tex] - 1,75 :(-7 [tex] \frac{7}{8} [/tex])
(0,4 - [tex] \frac{3}{20} [/tex])·6 [tex]\frac{2}{3} [/tex] - 1,75 :(-7 [tex] \frac{7}{8} [/tex])
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1)0,4-0,15=0,25=1/42)1/4*6 2/3=1/4*20/3=5/3=1 2/3
3)-1 3/4:(-7 7/8)=7/4*8/63=2/9
4)1 2/3+2/9=1 6/9+2/9=1 8/9