Question 1046427
Peter hit twice the diffrence of the number of home runs Alice hit and 6.
Altogether, they hit 18 home runs.
Let x represent the number of home runs Alice hit.  Peter {{{2(x-6)}}}
Question States:
2(x-6) + x = 18
3x = 30
x = 10, the number of home runs Alice hit.  Peter: 8 {{{2(x-6)}}}

And:
10 + 8 = 18  CHECKS!