To solve these calculations, we first carry out the operations within the brackets and then perform the multiplication and division.
1) 9/20 2/3 + 5/14 7/25= 9/20 2/3 + 5/14 7/25= 3/10 + 5/50= 3/10 + 1/10= 4/10= 2/5
2) 3/4 2/5 - 6/25 5/27= 3/4 2/5 - 6/25 5/27= 6/20 - 30/675= 3/10 - 2/45= 27/90 - 4/90= 23/90
Therefore, the solutions to the calculations are:1) 2/52) 23/90
To solve these calculations, we first carry out the operations within the brackets and then perform the multiplication and division.
1) 9/20 2/3 + 5/14 7/25
= 9/20 2/3 + 5/14 7/25
= 3/10 + 5/50
= 3/10 + 1/10
= 4/10
= 2/5
2) 3/4 2/5 - 6/25 5/27
= 3/4 2/5 - 6/25 5/27
= 6/20 - 30/675
= 3/10 - 2/45
= 27/90 - 4/90
= 23/90
Therefore, the solutions to the calculations are:
1) 2/5
2) 23/90