Question 76

The sum of 4x + 3y -­ 7z, x -­ y -­ z and -­2x -­ 3y + 4z is

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Sum of : (4x + 3y -­ 7z), (x -­ y -­ z) and (-­2x -­ 3y + 4z)

= $$(4x+x-2x)+(3y-y-3y)+(-7z-z+4z)$$

= $$3x-y-4z$$

=> Ans - (A)

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