Теңдеуді шеш:868:(217-y)=31

Question

Математика: Теңдеуді шеш:868:(217-y)=31​

провривррф · Accepted Answer

1) - 1/4 + 3/5 = (-5+12)/20=7/20; 2) 9/11 + (- 2/5) = (45 + (-22))/55=23/55; 3) - 20/21 + 3/7 = (-20+9)/21=-11/21; 4) - 8 9/14 + 3 3/7 =-5 9/14 + 6/14=-5 3/14; 5) 7 5/12 + (-3 7/24) = 4 5/12 - 7/24=4 10/24 - 7/24=4 3/24=4 1/8; 6) -6 11/12 + (-8 13/18) = -14 + (-33+(-26))/36=-14 + (-59/36)=-15 23/36; 7) - 5 12/35 + 10 = 5 - 12/35=4 23/35; 8) - 11 7/9 + 8 2/15 = -3 7/9 + 2/15=-3 + (-35+6)/45=-3 + (-29/45)= -3 29/45; 9) - 3 1/12 + 1/6 = -3 + (-1+2)/12 = -3 + 1/12=-2 11/12; 10) 3 6/7 + (- 6 4/9) = -3...

Теңдеуді шеш:868:(217-y)=31​

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