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LEVEL - 2(Problem Solving)
Q8. Write a negative integer and a positive integer whose
a) sum -9
b) difference -4
c) 
sum 0
Q9. The sum of two integers is 116 . If one of them is -79 , find the other integers.
Q10. Write five pair of integers 
(m,n) such that 
m÷n=-3. One of such pair is 
(-6,2).
Q11. What number should be added to the sum of 345 and 67 to make it equal to the smallest 3-digit number

LEVEL - 22(Problem Solving)\newlineQ88. Write a negative integer and a positive integer whose\newlinea) sum 9-9\newlineb) difference 4-4\newlinec) sum0 \operatorname{sum} 0 \newlineQ99. The sum of two integers is 116116 . If one of them is 79-79 , find the other integers.\newlineQ1010. Write five pair of integers (m,n) (m, n) such that m÷n=3 m \div n=-3 . One of such pair is (6,2) (-6,2) .\newlineQ1111. What number should be added to the sum of 345345 and 6767 to make it equal to the smallest 33-digit number

Full solution

Q. LEVEL - 22(Problem Solving)\newlineQ88. Write a negative integer and a positive integer whose\newlinea) sum 9-9\newlineb) difference 4-4\newlinec) sum0 \operatorname{sum} 0 \newlineQ99. The sum of two integers is 116116 . If one of them is 79-79 , find the other integers.\newlineQ1010. Write five pair of integers (m,n) (m, n) such that m÷n=3 m \div n=-3 . One of such pair is (6,2) (-6,2) .\newlineQ1111. What number should be added to the sum of 345345 and 6767 to make it equal to the smallest 33-digit number
  1. Combine equations: Add the two equations together to eliminate yy:(x+y)+(xy)=9+(4)(x + y) + (x - y) = -9 + (-4)2x=132x = -13x=132x = \frac{-13}{2}x=6.5x = -6.5, but xx must be an integer, so there's a mistake.

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