In a mathematical sense, 3x isn't an equation, but an expression. In this expression, 3 is a coefficnet.
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3x times x is the same as 3x times 1x seeing that x has the same value its basically 3times 1 but don't forget the x so 3x Another way is to take out the x from 3 and 1 x(3*1) = x(3) =3x
3 is the coefficient of x and 3x means 3 times x which on its own is not an equation because there is no equality sign .
Well, darling, if 3x equals 3, then x must be 1. It's as simple as that. Math doesn't have to be complicated, honey.
It is a straight line equation as for example when y = 3x+6 then 3 is the slope and 6 is the y intercept.
You have one equation in two unknowns. There is no solution possible without a second (independent) equation in the same two unknowns.