Question

Найдите значение выражения:1)11/24+7/36;2)13/35-5/21 ; 3)-17/42-6/63;4)-18/33+7/22;5)8 11/15+5 6/35 6) -17 5/84-26 7/60;7)+7 8/225-8 11/210; 8) -25 1/105+19 5/198 9)-31 12/185+32 5/222.

Answer 1

1) 11/24 + 7/36 = 33+14/72 = 47/72 = 0,65
2)13/35 - 5/21 = 39-25/105 = 14/105 = 2/15 = 0,13
3)-17/42 - 6/63= - 17/42 - 2/21 = - 17+4/42 = -21/42 = -1/2 = -0,5
4)-18/33 + 7/22 = -6/11 + 7/22 = -12+7/22 = -5/22 = -0,22
5)8 11/15 + 5 6/35 = 88/15+6/7 = 616+90/105 = 706/105 = 6 76/105 = 6,72