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Add the algebraic expressions: 3/2a-5/4...

Add the algebraic expressions: `3/2a-5/4b+2/5c ,2/3a-7/2b+7/2c ,5/3a+5/2b-5/4c`

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`3/2a-5/4b+2/5c ,2/3a-7/2b+7/2c ,5/3a+5/2b-5/4c`
`=a(3/2+2/3+5/3)+b(5/2-7/2-5/4)+c(2/5+7/2-5/4)`
`=(23/6)a-(9/4)b+(53/20)c`
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RD SHARMA-ALGEBRAIC EXPRESSIONS AND IDENTITIES-All Questions
  1. Add the algebraic expressions: 2/3a ,3/5a ,-6/5a

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  2. Add the algebraic expressions: 4x y^2-7x^2y ,\ 12 x^2y-6x y^2,\ -3x^2...

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  3. Add the algebraic expressions: 3/2a-5/4b+2/5c ,2/3a-7/2b+7/2c ,5/3a+5...

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  4. Add the algebraic expressions: (11)/2x y+(12)/5y+(13)/7x ,\ -(11)/2y-...

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  5. Add the algebraic expressions: 7/2x^3-1/2x^2+5/3,3/2x^3+7/4x^2-x+1/3,...

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  6. Subtract: -5x y from 12 x y

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  7. Subtract: 2a^2from-7a^2

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  8. Subtract: 2a-b from 3a-5b

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  9. Subtract:  2x^3-4x^2+3x+5 from 4x^3+x^2+x+6

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  10. Subtract: 3/2x-5/4y-7/2z\ from2/3x+3/2y-4/3z

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  11. Subtract: x^2y-4/5x y^2+4/3x y\ from2/3x^2y+3/2x y^2-1/3x y

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  12. Subtract: (a b)/7-(35)/3b c+6/5a c\ from3/5b c-4/5a c

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  13. Take away : 6/5x^2-4/5x^3+5/6+3/2x from (x^3)/3-5/2x^2+3/5x+1/4

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  14. Take away : (5a^2)/2+(3a^3)/2+a/3-6/5\ from1/3a^3-3/4a^2-5/2

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  15. Take away : 7/4x^3+3/5x^2+1/2x+9/2\ from7/2-x/3-(x^2)/5

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  16. Take away : (y^3)/3+7/3y^2+1/2y+1/2\ from1/3-5/3y^2

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  17. Take away : 2/3+a c-5/7a b+2/3b c\ from3/2a b-7/4a c-5/6b c

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  18. Subtract 3x-4y-7z from the sum of x-3y+2z\ a n d-4x+9y-11 zdot

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  19. Subtract the sum of 3l-4m-7n^2a n d\ 2l+3m-4n^2 from the sum of 9l+2m-...

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  20. Subtract the sum of 2x-x^2+5and-4x-3+7x^2 from 5

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