The property that 1 is the identity for multiplication.
It is: (5x-1)(5x+1) = 0 when factored
4 + 5x = 1 5x = 1 - 4 5x = -3 x = -3/5 x = -0.6
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
Multiply the bottom equation by -1
The property that 1 is the identity for multiplication.
It is: (5x-1)(5x+1) = 0 when factored
Yes.
5x - 1 = 24 5x - 1 + 1 = 24 + 1 5x = 25 5x/5 = 25/5 x = 5
4 + 5x = 1 5x = 1 - 4 5x = -3 x = -3/5 x = -0.6
y = 2x -1 y = 5x -13 So: 5x -13 = 2x -1 5x -2x = 13 -1 3x = 12 x = 4 and by substituting y = 7
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
X = 1
Multiply the bottom equation by -1
If y equals 5x-15 and x equals 1 then the value of y comes out to be -10. So y equals 5x-15 is -10.
5x - y + 1 = 0
-5x+1 = 6x -5x-6x = -1 -11x = -1 x = 1/11