Question 310171
"The sum of three times a number and 7 more than the number is the same as the difference between -11 and twice the number."

::translation::
Sum: adding
three times a number:3n
seven more than the number:7+n
is the same as:=
difference: subtraction
-11 and twice the number: -11-2n
___
::putting them in equation form::
{{{3n+(7+n)=(-11-2n)}}}add like terms
{{{4n+7=-11-2n}}}add 2n
{{{6n+7=-11}}} minus 7
{{{6n=-18}}}divide by 6
{{{n=-3}}}