Question

(2 1/4-1 1/4*(2/7+3 1/7*1/3)):0,7 найдите значение выражения

Answer 1

(2 1/4 - 1 1/4 * (2/7 + 3 1/7 * 1/3)) : 0,7 = (9/4 - 5/4 * (2-7 + 22/7 * 1/3)) : 7/10 = (9/4 - 5/4 * (2/7 + 22/21)) : 7/10 = (9/4 - 5/4 * (6+22)/21) : 7/10 = (9/4 - 5/4 * 28/21) : 7/10 = (9/4 - 35/21) : 7/10 = (189-140)/84 : 7/10 = 49/84 * 10/7 = 35/42 = 5/6