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What should be added to (1/2+1/3+1/5) to...

What should be added to `(1/2+1/3+1/5)` to get 3?

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RD SHARMA-OPERATIONS ON RATIONAL NUMBERS-All Questions
  1. What number should be subtracted from 3 1/2 to get 1 2/7

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  2. What should be added to (2/3+3/5) to get (-2)/(15) ?

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  3. What should be added to (1/2+1/3+1/5) to get 3?

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  4. What should be subtracted form (3/4-2/3) to get(-1)/6 ?

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  5. Simplify: (-3)/2+5/4-7/4 (ii) 5/3-7/6+(-2)/3

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  6. Simplify: 5/4-7/6-(-2)/3 (ii) (-2)/5-(-3)/(10)-(-4)/7

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  7. Fill in the blanks: (-4)/(13)-(-3)/(26)= (ii) (-9)/(14)+=-1

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  8. Fill in the blanks: (-7)/9+=3 (ii) +(15)/(23)=4

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  9. Multiply: 3/4\ by 5/7 (ii) 3/7 by ((-4)/5)

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  10. Multiply: ((-5)/9) by 4 (ii) ((-36)/7) by (-(28)/9)

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  11. Simplify: (-8)/7xx(14)/5 (ii) (13)/6xx(-18)/(91)

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  12. Simplify: (-5)/9xx(72)/(-125) (ii) (-22)/9xx(-51)/(-88)

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  13. Simplify: ((-16)/5xx(20)/8)-((15)/5xx(-35)/5) ((-3)/2xx4/5)+(9/5xx(...

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  14. Multiply: 7/(11)b y5/4 (ii) 5/7b y(-3)/4

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  15. Multiply: (-2)/9b y5/(11) (ii) (-3)/(17)b y(-5)/(-4)

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  16. Multiply: (-5)/(17)b y(51)/(-60) (ii) (-6)/(11)b y(-55)/(36)

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  17. Multiply: (-8)/(25) by (-5)/(16) (ii) 6/7 by (-49)/(36)

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  18. Simplify each of the following and express the result as a rational...

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  19. Simplify each of the following and express the result as a rational...

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  20. Simplify: (-5xx2/(15))-(-6xx2/9) (ii) ((-9)/4xx5/3)+((13)/2xx5/6)

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