Question 1151659

the ordered pair ({{{2}}},{{{5}}}) satisfied all three equations

{{{2x-y= -1}}}

{{{3x+5y= 31}}}

{{{7x-2y= 4}}}

conclusion: all three of the lines intersect in that point, and solution is {{{x=2}}}, {{{y=5}}}


{{{drawing ( 600, 600, -10, 10, -10, 10, 
circle(2,5,.12),locate(2,5,p(2,5)),
graph( 600, 600, -10, 10, -10, 10, 2x+1, -3x/5+31/5,7x/2-2)) }}}