Math is here to progress the knowledge, technology and understanding of the universe of humanity... and also to cause stress to adolescents so that more money is spent on health care and other things that we are convinced we need because of the media so that the economy of the country and government grows.
5x-6y=9. If we replace y with (-2/3), we get 5x-6(-2/3)=9. Now to solve for x, we have to get x alone on one side of the equals sign. So let's move everything on the left side except for the x (which includes the 5 that the x is being multiplied by). Doing this, we get 5x=6(-2/3)+9. We might as well multiply the 6 by the (-2/3) to get it out of the way now. 6 x -2/3 is -4, so we now have 5x=-4+9. Add the -4 and 9 to get 5. Now we have 5x=5! So all we have to do is divide 5x by 5 to get x alone without being multiplied by anything. But wait! If we divide one side of the equation by 5 we have to divide the other side as well, so 5x/5 is x and 5/5 is 1. Finally, we are left with x=1. And that is the x-value. 1.
noun [North American]
"she teaches math and science."
the abstract science of number, quantity, and space. Mathematics may be studied in its own right ( pure mathematics ), or as it is applied to other disciplines such as physics and engineering ( applied mathematics ).
the mathematical aspects of something.