Question

Вычислите
А) 5/6+(-7/12)
Б) -3/10-1/15
В)-3/5*5/9
Г) 8/21:(-4/7)

Answer 1

а) 5/6 + (-7/12) = 10/12 - 7/12 = 3/12 = 1/4
б) -3/10 - 1/15 = -9/30 - 2/30 = -11/15
в) -3/5 * 5/9 = -15/45 = -3/9
г) 8/21 : (-4/7) = 8/21 * (-7/4) = -2/3