Question

(a + 2b + 3c) − (4a + 6b − 5c) is equivalent to:

A. −4a − 8b − 2c
B. −4a − 4b + 8c
C. −3a + 8b − 2c
D. −3a − 4b − 2c
E. −3a − 4b + 8c

Answer 1

= a + 2b + 3c - 4a - 6b + 5c
= ( -3a - 4b + 8c )
Hence the answer is option E

Answer 2

`(a + 2b + 3c) - (4a + 6b - 5c)= a + 2b + 3c - 4a - 6b + 5c =\\ \\= -3a -4b +8c \\ \\Answer : \ E. \ \ -3a- 4b + 8c`