Question 862467
Multiply eq. 1 by 3 and add the equations together.
{{{-15u+6x-u-6x=66+34}}}
{{{-16u=100}}}
{{{u=-100/16}}}
{{{highlight(u=-25/4)}}}
Then use either equation to solve for {{{x}}}.
{{{25/4-6x=34}}}
{{{-6x=34-25/4}}}
{{{-24x=136-25}}}
{{{-24x=111}}}
{{{x=-111/24}}}
{{{highlight(x=-37/8)}}}