Given four lines with equations  x+2y−3=0 ,3x+4y−7=0,2x+3y−4=0,4x+5y−6=0

x+2y−3=0,2x+3y−4=0intersect at (−1,2)⋅4x+5y−6=0 passes through this point but 3x+4y−7=0 does not pass through it, so only three of them are concurrent