Answer:

Step-by-step explanation:
We know that 
Also , 
So ,

Answer:
Let the income and saving rs7x and respectively 2x
then
2x=500
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
just divide 36 by 3 which is 12

Answer:
2(n + 3) - 6 is the expression that represents the final number.
Step-by-step explanation:
Answer:
-s = -4
Step-by-step explanation:
-9s - 4 = -8s = -9s + 8s = -4 = -s= -4