Question

if X=a-b+c,Y=a+b+c,Z=a-b-c

-X-Y+Z

please explain​

Answer 1

Answer:

-a-b-3c or -(a+b+3c)

Step-by-step explanation:

given; X = a-b+c, Y= a+b+c and Z= a-b-c

then, -X-Y+Z = ?

= -(a-b+c)-(a+b+c)+(a-b-c)

= -a+b-c-a-b-c+a-b-c

= -2a+a-2b+b-3c

= -a-b-3c or -(a+b+3c), ans...