Question 1147686
<pre>
u = units or ones digit
t = tens digit
10t+u = the number</pre>eight times the sum of the digits of a two digit number 
<pre>8∙(t + u)</pre>exceeds the number by 19.<pre>
8∙(t + u) = (10t + u) + 19
  8t + 8u = 10t + u + 19
 -2t + 7u = 19</pre>
The tens digit is 3 more than the units digit. <pre>
t = u + 3</pre>
What Is the number.<pre>
We have this system of two equations and two unknowns:

{{{system(-2t+7u = 19,t=u+3)}}}

You finish.  Solve that by substitution

Edwin</pre>