Question 76

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

Solution

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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