3x - 6 + 1 = 7
Combine the -6 and the +1 on the left side of the equation :
3x - 5 = 7
Add 5 to each side:
3x = 12
Divide each side by 3 :
x = 4
It equals 1 + 3z and, unless you know the value of z, you are not going to be any the wiser as to its value.
That depends what the value of p is.
y - 1
-1
4
It is 1
The value of x is -21.
The value of x is 1
x=4
7
It is an equation and the value of x is 1
The discriminant is 1.