Question 176526
Let's call the number N.
"a number multipied by 8"
{{{8*N}}}
"added by 4'
{{{8*N+4}}}
"is 7 more than a number"
{{{8*N+4=N+7}}}
{{{8*N-N+4=N-N+7}}} Subtract N from both sides.
{{{7*N+4=7}}}
{{{7*N+4-4=7-4}}} Subtract 4 from both sides.
{{{7*N=3}}}
{{{7N/7=3/7}}} Divide both sides by 7.
{{{N=3/7}}}