Question

Subtract: (3a - 4b + 5c) from (4a - b + 6c).

• A. $a+3b+c$
• B. $a+2b+c$
• C. $a+b+c$
• D. $a+3b+3c$

Answer 1

The correct option is A

$a+3b+c$

Given expression (4a - b + 6c) and (3a - 4b + 5c).
Required expression = (4a - b + 6c) - (3a - 4b + 5c).
= 4a - b + 6c - 3a + 4b - 5c (opening the brackets)
= (4a - 3a) + (-b + 4b) + (6c - 5c) (grouping like terms)
= a + 3b + c