Question

If A = 5x + 11y - 15z, B=12x - 13y + 19z, C 7x - 6y + 21z, find

(a) A+B+C​

Answer 1

Answer:

A+B= 5x + 11y - 15z + 12x -13y + 19z = 17x-2y + 4z sum of A + B - C = 17x - 2y +4z - 7x - 6y + 21z = 10x - 8y + 25z

Step-by-step explanation:

hope it help

Answer 2

Sorry brother i cant solve this but best of luck