Question

I don't understand this one. the sum of four times a number plus three times another number. I don't know what the sum means.

Answer 1

4x + 3x

Answer 2

sum means addition.
so 4 times one number + 3 times another number
=4x+3y (you cannot pick x to label both numbers since you dont know that the two numbers are the same)

Answer 3

I didn't see the = sign on the list of symbols, ty