Question

1.JAU
III. Word Problems:-
1. Subtract the sum of 5x - 4y + 6z and - 8x + y - 2z from the sum of 12x - y
+ 3z and - 3x + 5y -- 8z
Five years ago the man was four times as
his​

Answer 1

{(5x-4y+6z)+(-8x+y-2z)} - {(12x-y+3z)+(-3x+5y-8z)}

(-3x-3y+4z) - (9x+4y-5z)

-3x-3y+4z-9x-4y+5z

-12x-7y+9z

Therefore the sum is -12x-7y+9z