
Starting with this first equations up
here, we see that we have 3x+4 equals

smiley face. 3x has a 3 in it, but this is
multiplied by x. A term like this, even

though there is a number in it, is called
a variable term. Because its whole value

is going to change or vary depending on
what number we plug in for x. This is

definitely a variable term, 4 is just a
number so no check there and finally, we

have a smiley space. That means, it must
be a variable. And we can go through the

other three equations in the same way
turnbyturn to figure out what should be

checked. And know that there are some
things down here that we haven't talked

explicitly about yet, and that might have
thrown you off. Like, we have a fraction

right here and we have a couple of
expononents, but we'll get to those things

pretty soon. And understanding the
difference between variable and

nonvariable terms is really important for
understanding everything that we're going

to do in Algebra. That means we're off to
a great start in developing our

foundation.