You would have to make the numbers have the same denominator. So you would have -15/20 + 4/20
Then you would have to put the sign of the higher number on it, So you would have -15/20 + 4/20 = -11/20
Yes. youre right, but no2 you can kinda make it a little more 3d like their example just saying
They are not like terms. So false.
5x^2y is not the same as 7xy^2 because the exponent is on different variables.
<span />