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What does the equals sign in math mean?
Equals sign demonstrates that something is the same as something, or equal to.
What is the difference between an expression and an equation is that an has an equal sign?
I think you mean this as an answer, not a question. An expression does not have an equals sign (e.g 2x4). An equation does have an equals sign (e.g 2x4=8).
What is 14 equals 2 plus r-21?
In these types of questions, you have to try to isolate the unknown variable.14 = 2 + r - 21.Remember whenever you move ANYTHING over the equals sign, you have to make its sign opposite. Since the r is positive, and we are moving it over the equals sign we have to make it a negative sign. When we move the 14 over, it is currently positive so we make it into a negative.-r = -14 + 2 - 21-r = -12 - 21-r = -43(Eliminate the negative sign)r = 43.
What does x equals x mean?
The "equals" means that you claim that whatever is on the left of the equal sign is the same as whatever is on the right of the equal sign. In this case, it is claimed that x is the same as x - a true claim.
How do you solve -6 equals x over 8 plus 4?
-6 = x/8+4. Work out the same values first, in this case it is the 8 + 4, which equals 12. -6 = x/12 Move the number next to the variable, in this case the x, over the other side of the equals sign, but remember that as you are doing this you MUST change the sign to the opposite. Since x/12 equals x over 12, it means it is x divided by 12. When moved over the equals sign, it WILL become a multiplication sign. -6 x 12 = x -72 = x x = -72. For further clarification, message me on my message board. Thanks!
