One, the value five.
only one value will make the equation true: 2x = 5 x=5/2 x=2.5
that would be limited to 3 and -3 for values of x
7
4.6457513110645907 -0.6457513110645907
It is the set of values for all the variables in the equation which make the equation true.
The question does not make sense because it has what appears to be an equation but which contains two "equals"!The question does not make sense because it has what appears to be an equation but which contains two "equals"!The question does not make sense because it has what appears to be an equation but which contains two "equals"!The question does not make sense because it has what appears to be an equation but which contains two "equals"!
If: 5 = x-y Then: y = x-5
A solution to an equation is a set of values for the variables in the equation which make it true.
They are called the "solutions" of the equation.
You could put the equation in slope-intercept form or in parent linear function or even make a table of values.
a solution
A variable like "x" can have any value. If you have a complete equation, like 9x + 12 = 100, a specific value of x will make the equation true; other values will make it false. But here, you don't have an equation, so any value will do for x.