Question

вычислить (1\3)-¹-(-6\7)+(1\2)²:2​

Answer 1

1))) (1\3)⁻¹-(-6\7)+(1\2)²:2​=

(1\3)⁻¹=3

-(-6\7)=6/7

(1\2)²=1/4

2))) 3+6/7+1/4:2=

3+6/7=(3*7+6)/7=27/7

1/4:2=1/4:2/1=1/4*1/2=1/8

3))) 27/7 + 1/8 = (27*8+1*7)/7*8 = (216+7)/56 = 223/56 = 3ц 55/56