Question 969176

what is  -x-10y=15
         -x+4y=13  in elimination
<pre>- x - 10y = 15 ------- eq (i)
- x +  4y = 13 ------- eq (ii)
    - 14y =  2 ------- Subtracting eq (ii) from eq (i)
{{{y = 2/(- 14)}}}, or {{{highlight_green(y = - 1/7)}}}
Substitute {{{- 1/7}}} for y in any of the 2 original equations to determine the value of x