Question

Add 6x+4y-z+3,2y-3z+4,y-7x+2z-1 and 2z-5x-6

Answer 1

Answer:

given 6x + 4y -z + 3

2y - 3z + 4

y -7x + 2z -1

2z -5x -6

Step-by-step explanation:

Add all them

by horizontal method

and by vertical method

6x + 4y - z = - 3

2y -3z = -4

-7x + y +2z = 1

-5x + 2z =6

________________

-6x +7y + 0z = 0

2 Nd method

6x + 4y -z + 3 + 2y -3z +4 + y - 7x + 2z - 1 + 2z -5x - 6 = -6x + 7y +0z + 0

hence Answar is -6x + 7y

Answer 2

Answer:

-6+7y is the correct answer

Step-by-step explanation:

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