Question 1030091
<pre><b>

{{{2x+y=8}}} and {{{x<7}}}

---------------------

Solve the first for 2x

{{{2x = 8-y}}}

{{{x<7}}}, given  

Multiply both sides by 2

{{{2x<14}}}

Substitute 8-y for 2x 

{{{8-y<14}}}

Subtract 8 from both sides:

{{{-y<6}}}

Multiply both sides by -1 reversing inequality:

{{{y>-6}}}

Edwin</pre></b>