Question

Please help with This its for an exam

Answer 1

Step-by-step explanation:

1)7/24+(-13/36)

=7/24-13/36

=47/72

2)2/3(3/5×25/18)

=2/3×5/6

=5/9

3)let the other no.be x

13 1/3 × x =80

40/3 × x=80

x=80/ 40/3

x=80×3/40

x=6

4)(x+y)+z=x+(y+z)

x=4/5,y=-3/6,z=-2/15

(4/5-3/6)+(-2/15) = 4/5+(-3/6-2/15)

13/10-2/15=4/5-19/30

7/6=7/6

5)-1/12-4/9

=-19/36

6)-3/4 - x = 5/6

-x=5/6+3/4

-x=19/12

x=-19/12

Answer 2

Answer:

Step-by-step explanation:7/24 + (-13/36)

7/24 - 13/36

(21 - 26)/72

-5/72

4-

-1/12 - (-4/9)

-1/12 + 4/9

-3+16/36

13÷36