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If 2x+y=45 and x+2y=15 then x+y is ....

If `2x+y=45` and `x+2y=15` then `x+y` is _________.

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KALYANI PUBLICATION-EQUATIONS REDUCIBLE TO LINEAR FORM-EXERCISE
  1. Work Problem related to speed, distance and time Two places A and B ...

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  2. Work Problem related to speed, distance and time Places A and B are...

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  3. Work Problem related to speed, distance and time A men walks a certa...

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  4. Work Problem related to the form A/(ax+by)+B/(cx+dy)=k A boat goes 3...

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  5. Work Problem related to the form A/(ax+by)+B/(cx+dy)=k A motorboat t...

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  6. Write the solution of the equation x/y=1, x+y=1

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  7. Write the solution of the equation 5x-10y+5=0 and x-2y+1=0.

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  8. A two digit number, the digit in the units place is x and ten's place...

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  9. a1x+b1y+c1=0, a2x+b2y+c2=0 Under what condition the above equations ...

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  10. a1x+b1y+c1=0, a2x+b2y+c2=0 Under what condition the above equations ...

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  11. For p= system x+py=2 and 4x+12y=8 has infinitely many solution.

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  12. The roots of the equation x+y=6 and x-y=0 is .

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  13. a1x+b1y+c1=0 and a2x+b2y+c2=0 has no solution if .

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  14. The solution of x/2+y/3=1 and x-y=0 is .

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  15. If 2x+y=45 and x+2y=15 then x+y is .

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  16. The roots of the equation x+2y=4 and 2y-x=0 are

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  17. If a1/a2!=b1/b2 then the system of equation a1x+b1y+c1=0, a2x+b2y+c2=0...

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  18. The value of a for which the system of equation 6x-y=2, ax-2y=3 has a ...

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  19. If x+y=3 and xy=2, then the value of x-y is

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  20. The roots of the equation x+2y=4 and 2x-y=0 are

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