Question

Используя приёмы, показанные в примерах 6 и 7, вычислите:
СРОЧНООО!!!!!!

Answer 1

а) -1/2 - 1/4 = -2/4 - 1/4 = -3/4 = -0,75
б) -1/15 + 1/10 = -2/30 + 3/30 = 1/30
в) -5/8 -3/4 = -5/8 -6/8 = -11/8 = - 1 3/8
г) 2/11 - 3/7 = 14/77 - 33/77 = -19/77
д) 1/3 - 3/4 = 4/12 - 9/12 = -5/12
е) - 5/6 + 3/2 = -5/6 + 9/6 = 4/6 = 2/3
ж) 2/9 - 2/3 = 2/9 - 6/9 = -4/9
з) - 3/2 - 2/3 = -9/6 - 4/6=/ = -13/6 = - 2 1/6