Question

Add:X-y+z, 2x - 3y +4z,20x+3y-2z,-2x+4y+ 25​

Answer 1

Answer:

5x-3y+3z+45

Step-by-step explanation:

(x-y+z) + (2x -3y + 4z) + (20+3y-2z) + (-2x+4y+25)

= x-y+z + 2x-3y+4z + 20+3y-2z - 2x+4y+25

= x+2x+2x -y-3y+3y+4y +z+4z-2z +20+25

= 5x-3y+3z+45