Question

for x=1/2, y=3/5 nad z= -7/5 putting the formula is (x+y)+z=x+(y+z)

Answer 1

Answer:

proved below

Step-by-step explanation:

Given that X=1/2 Y=3/5 Z=(-7/5)

(X+Y)+Z=X+(Y+Z)

(1/2+3/5)+(-7/5)=1/2+(3/5+(-7/5))

(5+6/10)+(-7/5)=1/2+(3/5-7/5)

(11/10-7/5)=1/2+((3-7)/5)

(11-14)/10=1/2-4/5

(-3/10)=(5-8)/10

(-3/10)=(-3/10) proved

Answer 2

Step-by-step explanation:

I have given clear explanation in the photo above