Question

(a) Subtract 4a - 7ab + 3b + 12 from 12a-9ab + 5b - 3
(b) Subpract 3xy + 5yz - 7zx from 5.xy – 2yz – 27x + 10 xyz
(c) Subtract 4p'q - 3pq + 5p9 - 8p + 74 - 10 from
18 – 3p – 1lq + 5p9 - 2pq? + 5p'q​

Answer 1

Step-by-step explanation:

A. ( 12a - 9ab + 5b - 3 ) - ( 4a - 7ab + 3b + 12 )

= 12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12

= 12a - 4a - 9ab + 7ab + 5b - 3b - 3 - 12

= 8a - 2ab + 2b - 15

B.( 5.xy – 2yz – 27x + 10 xyz ) - ( 3xy + 5yz - 7zx)

= 5.xy – 2yz – 27x + 10 xyz - 3xy - 5yz + 7xz

= 5xy- 3xy -2yz -5yz - 27x + 10xyz - 7zx

= 2xy - 7yz - 27x + 10xyz - 7zx

C.