5x - 2y + 7z ; -2x + 7y + 2z ; 5x - 7y + 5z
Answers
Answered by
1
Answer:
8x-2y+14z
Step-by-step explanation:
(5x-2y+7z)+(-2x+7y+2z)+(5x-7y+5z)
5x-2y+7z-2x+7y+2z+5x-7y+5z
5x-2x+5x-2y+7y-7y+7z+2z+5z
3x+5x+5y-7y+9z+5z
8x-2y+14z
Similar questions