Question

if x = 6a + 8b + 9c, y = 2b- 3a- 6c and z = c - b + 3a find 2x-y-3z​

Answer 1

Answer:

just put the values of X,y and z in the given eqn 2x-y-3z

Answer 2

Answer:

put the value of x,y,z in the equation 2x-y-3z

2(6a+8b+9c)- (2b-3a-6c)-3 (c-b+3a )

12a+16b+18c-2b+3a+6c-3c+3b-9a

12a+3a-9a+16b-2b+3b+18c+6c-3c

6a+17b+21c

I hope it helps you