Question

Solve these questions and I will mark brainliest who will have the best answer​​

Answer 1

2)(-4)+[15+(-3)]=[(-4)+15]+(-3)

-4+(12) = 11-3

8 = 8

HENCE,verified.

3)

a)15×(-2)×8= -30×8= -240

b)(-1)×(-4)×7×(-5)=4×(-35)=-140

4)

a)(-31)÷[(-30)+(-1)]=(-31)÷(-31)=1

b)[(-3)+4]÷[(-2)+1]= 1÷(-1)= -1.

6)1/2×11/4=11/8 ×(6/6)======> 66/48

5/8×23/6=115/48

so,second one us greater.

5)

a)5/3+7/2=(10+21)/6=31/6

b)21/3÷5/3=21/5

c)7/4×28/3=49/3

d)8/7×7/4=2

Answer 2

Step-by-step explanation:

$Answer$

Refer to the above attachment ⬆️⬆️.