For this case, the first thing we must do is define variables.
We have then:
f: number of points that fabio scored.
c: number of points that Carlos scored.
We now write the equation that models the problem:
[tex]f = 2c - 7[/tex]
Then, for f = 31 we have:
[tex]2c - 7 = 31[/tex]
From here, we clear the number of points:
[tex]2c = 31 + 7[/tex]
[tex]2c = 38[/tex]
[tex]c = \frac{38}{2}[/tex]
[tex]c = 19[/tex]
Answer:
The equation to find the number of carlos points is:
[tex]2c - 7 = 31[/tex]
Then, Carlos scored:
[tex]c = 19[/tex]
Answer:the correct equation is 2c-7=31
Step-by-step explanation: