Question

Prosze ooobliczenie

10 X 1/5 - 1/3 : 1/2 + 3 1/3

2 1/5 : 6/7 + 4 1/2. X. 2 2/3 - ( 3/4 + 1/6 ) : 11/15.
Za pomoc thank

Answer 1

10 * 1/5 -1/3 : 1/2 + 3i1/3 = 10/5 - 1/3 * 2/1 + 3i1/3 = 2 - 2/3 + 3i1/3 =
= 5i1/3 - 2/3 = 4i4/3 - 2/3 = 4i2/3

2 1/5 : 6/7 + 4 1/2 * 2 2/3 - (3/4 + 1/6) : 11/15 =
= 11/5 * 7/6 + 9/2 * 8/3 - (9/12 + 2/12) : 11/15 =
= 77/30 + 72/6 - 11/12 * 15/11 =
= 2 17/30 + 12 - 1/4 * 5/1 =
= 2 17/30 + 12 - 5/4 = 2 17/30 + 12 - 1i1/4 =
= 14 34/60 - 1 15/60 = 13  19/60