Question 341028
Define a variable, {{{N}}} to stand as your number.
the difference of a number and seven:{{{N-7}}}
three times that:{{{3(N-7)}}}
The word "is" means equals in equation-speak,
the number increased by 4:{{{N+4}}}
twice that:{{{2(N+4)}}}
Now put it all together,
{{{3(N-7)=2(N+4)}}}