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5-4x=x-35-4x+4x=x-3+4x (adding 4x on both side)5=5x-35+3=5x-3+3 (adding 3 on both side)8=5xx=8/5
x-4x=5 (1)x-(4)x=5 (-3)x=5 x= 5/(-3) x= -5/3
If the questions asks: (3)/(4x+2) = (5)/(4x-6) then x = -(7/4)
You have 2 equations and 2 unknowns so you can solve 2x-3y = -11 y = 4x -3 2x - 3y = -11 -4x + y = -3 multiply 1st equation by 2 both sides: 4x-6y = -22 -4x + y = -3 add: -5y = -25 y = 5 substitute y = 5 into either equation: -4x+y = -3 -4x +5 = -3 -4x = -8 x = 2
16x2 - 25 = (4x + 5) ( 4x - 5)