-5x + 2(4x-10)=10
3x-2x+4x1x+4x5x
X x(1/4) =5 Therefore: X/4=5Therefore: X=4x5X =20
5x2+14x-24=0 Delta = 142-4x5x(-24)=676=262 X = (-14 + sqrt(676))/(2*5) = 12/10 = 6/5 or X = (-14 - sqrt(676))/(2*5) = -40/10 = -4
So far, it is known that the following it true:y = 4x + 2y = 5xTo make the search for the solution easier, I'll assume that this is based on two different equations:y = 4x + 2yandy = 5xThe first equation can be simplified like so:y - y = 4x + 2y - y0 = 4x + yy = -4xIf you use substitution, the fact that y must equal either -4 times a number or 5 times a number can be used to find the following:5x = -4x5x + 4x = 09x = 0x = 0The only answer to this problem is x = 0 (zero).