Question

Write each of the following statements by using appropriate grouping
symbols:
(i) The sum of a – b and 3a – 2b + 5 is subtracted from 4a + 2b – 7.
(ii) Three times the sum of 2x + y – [5 – (x – 3y)] and 7x – 4y + 3 is subtracted
from 3x – 4y + 7
(iii) The subtraction of x2 – y
2 + 4xy from 2x2 + y2 – 3xy is added to 9x2 – 3y2–
xy.

Answer 1

Step-by-step explanation:

The sum of a−b and 3a−2b is written as {(a−b)+(3a−2b)}

Now, this sum is to be subtracted from 4a+2b−7

So,

It can be written as :

(4a+2b−7)−{(a−b)+(3a−2b)} please make brains