Answer:

Step-by-step explanation:

3 9/10 + 4/5
39/10 + 4/5
39/10 + 8/10
47/10= 4 7/10
Step-by-step explanation:
If there 5% is allowed in Rs 1,580 than the selling price of the watch is 1,501
The answer is 84 because of process priority

1) Let's write out both expressions subtracting 4m²+2mn+8n² from 2m²+6mn+2n²

2) Note that when we subtract 4m^2 + 2mn + 8n^2 from 2m^2 + 6mn + 2n^2 we need to swap the sign by placing -1 outside the parentheses and then combine like terms adding those terms algebraically.