Question

Add:7a+9b-7c, 2a-4b-3c and 3b+2c-5c. By vertical method

Answer 1

$\huge\bold\purple{❦ᴀɴsᴡᴇʀ❦}$

After adding we get:

 →(3a−4b+4c)+(2a+3b−8c)+(a−6b+c)

→3a+2a+a−4b+3b−6b+4c−8c+c

→6a−7b−3c

Answer 2

$\huge\bold\purple{❦ᴀɴsᴡᴇʀ❦}$

$</p><p></p><p></p><p>\bold\green{ ᴀғᴛᴇʀ \: ᴀᴅᴅɪɴɢ \: ᴡᴇ \: ɢᴇᴛ</p><p>  ⇴(3a−4b+4c)+(2a+3b−8c)+(a−6b+c)</p><p>⇴3a+2a+a−4b+3b−6b+4c−8c+c</p><p>⇴6a−7b−3c</p><p></p><p> }$