Respuesta :
Assuming it's 7, 2, and 31, you can set up (31+7)/2 is the amount that Carlos scored, which is 38/2 or 19.
222x-777=313131
Add 777 to both sides
222x=313908
divide 222 to both sides
x=1414
Carlos has 1414 points
Add 777 to both sides
222x=313908
divide 222 to both sides
x=1414
Carlos has 1414 points