Question

18. What should be added to 2a + 3b-4c to make 5b + 4a - 2c?​

Answer 1

Step-by-step explanation:

-9 is correct answer

hope it's help you

Answer 2

Answer:

let the number be x

• 2a + 3b - 4c + x = 5b + 4a - 2c
• x = 5b + 4a - 2c - 2a - 3b + 4c
• x = 5b - 3b + 4a - 2a - 2c + 4c
• x = 2b + 2a + 2c
• x = 2 ( a + b + c )

2 ( a + b + c ) must be added to 2a + 3b-4c to make 5b + 4a - 2c