Question

What should be added to 3x+5to get 9x+5

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Answer 1

Answer:

3x+5+x=9x+5

4x+5=9x+5

5x+5=5

5x+5-5=5-5

x=5/5

x=1

Answer 2

Let the term to be added is 'm'.

Thus, According to the question:

3x + 5 + m = 9x + 5

m = 9x + 5 - 3x - 5

m = 6x

Hence, 6x must be added to 3x+5 to get 9x+5.