Question

9. simplify
a) 7-3 ¹/² - 2 ¹/²
b) 3 ¹/⁸×2 ²/5×1 ³/5
c) 11.2×0.15÷⁴/⁵
d) 3 ³/6÷⁸/²¹×¹/²⁷

10. Arrange the following rational numbers in the descending order:

1) 2/-3, -4/9, -5/12, 7/-18

2) 3/-4, -5/12, -7/16, 9/-24

11. Simplify:
1) -2 + ( 3 / 8 ) + ( - 1 / 5 ) ,

2) (2/3) + (-7/11) + (-1/4)

12. From which number should (-11/4) be subtracted to give (-11/4)?​

Answer 1

Answer:

bad mai kardonga abhi time nhi hai

Answer 2

Answer:

10 sum is in attachment

11 sums u scan in brainly it self dude

12(-4/5)-k = -11/14

Or, (-4/5)+(11/14)= k

Or, ( -4*14+11*5)/70= k

Or, ( —56+55)/70 = k

So k= -1/70

That means -1/70 should be subtracted.