Question

Find the sum of: 72 − 104 + 5 and -32 + 4 - 10. What should be added to 32 + 32 + 3 to get 3 + 3 ? (1 mark) 3. Subtract the sum of 12ab –10bc –18ac and 9ab + 12bc + 14ac from the sum of ab + 2bc and 3bc – ac. Answer these with Explanation To be marked as BRAINLIEST!

Answer 1

Answer:

a). -65

b). -61

c). -20ab + 3bc +3ac

Step-by-step explanation:

According To the Question,

a). the sum of 72 − 104 + 5 and -32 + 4 - 10 .

• (72 − 104 + 5) + (-32 + 4 - 10)
• (-27) + (-38)
• -27 - 38
• -65

b). What should be added to 32 + 32 + 3 to get 3 + 3 , Let X be Added .

• Thus,  (32 + 32 + 3) + X = 3 + 3
• 67 + X = 6
• X = 6 - 67
• X = -61

c). Subtract  the sum of 12ab –10bc –18ac and 9ab + 12bc + 14ac from the sum of ab + 2bc and 3bc – ac.

• Thus, [(ab + 2bc) + (3bc – ac)] - [( 12ab –10bc –18ac) + (9ab + 12bc + 14ac)]

• (ab + 5bc - ac) - (21ab + 2bc - 4ac)

• ab + 5bc - ac - 21ab - 2bc + 4ac
• -20ab + 3bc + 3ac