artistethandraws artistethandraws

04-12-2020
Mathematics

contestada

3x+8=3x+____

Which value could you write in the blank above that would make the equation have one solution?
a.2x

b.8

c.7

Respuesta :

ironsuperskull ironsuperskull

04-12-2020

Answer:

2x

Step-by-step explanation:

Think about it. Adding 8 would make the equation: 3x+8=3x+8. That has infinite solutions. if you made it 7, it would be 3x+8=3x+7, which is impossible.

Therefore, it must be 2x, which would make the equation 3x+8=5x.

Let's check: 3x+8=5x

8=2x

4=x

All good.

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