Question

{1.} 2/15 - 1/2 + 3/10 .{ 2.} 3/7 + 4/21 - 13/14 . {3.} 22/5 - 4/3 + 11/4 . {4.} 40/1 + 5/3 + 167/8 . {5.} 2,25 + 25% + 3/2

Answer 1

1) 2/15 - 1/2 + 3/10 =4/30 - 15/30 + 9/30 =
-11/30 + 9/30 =
-2/30
2) 3/7 + 4/21 - 13/14 =
12/42 + 8/42 - 39/42 =
20/42 - 39/42 =
-19/20
3) 2/5 - 4/3 + 11/4 =
24/60 - 80/60 + 55/60 =
-56/60 + 55/60 =
-1/60
4) 40/1 + 5/3 + 167/8 =
960/24 + 40/24 + 501/24 =
1000/24 + 501/24 =
1501/24
5) 2,25 + 25% + 3/2 =
225/100 + 25/100 + 3/2 =
225/100 + 25/100 + 150/100 =
250/100 + 150/100 =
400/100 =
4/1