x is a variable. You do not have to know what its value is. In that equation you have to find the value of x, so if you already know what x stands for then you know the answer
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15 x 10 = 150
An equation may have zero, one, or more solutions (this is also true for a system of equations). The equation 2 + x = 5 has only solution, for example. x can only equal 3, so there is one solution. (An example of an equation with more that one solution is x2 = 4. In this case x can equal 2 or -2, so this equation has two solutions. An example of an equation with an infinite number of solutions is x + 6 = 3*2 + x. x can equal any number to make this equation true, so it has an infinite number of solutions. The equation x = x + 1 is an example of an equation with no solutions.)
Depends. Do you mean 8 x 6 x 0 because that is 0. But if you mean 8 x 6 x o it would become and algebraic equation, and the answer would be 48o, or whatever the value of o is multiplied buy 8 and 6.
Yes, that term is used in math. Consider an equation; I'll use a simple one: 2x = 14 This is a statement about the equality of the two sides; it is stated that 2, multiplied by "x", is equal to 14. Depending on the value of "x", this statement can be true, or false. In this case, if you replace "x" with 7, the statement is true; if you replace it by any other value, it is NOT true. The equation is said to be "satisfied" by any value which, when replaced for the variable, converts it into a true statement - in this case, 7.
The set of all the solutions of an equation or condition