How do you add variables in math like 6x + 8y?

1 Answer
Apr 9, 2015

Do remember when adding variables in expressions, you only can add and subtract variables that are of the same value like 2color(red)x+6color(red)x=8color(red)x and 7color(blue)y-8color(blue)y=-color(blue)y

As the variables x and y are different, you cannot add them up in an expression.

Hence an expression like 6x+8y cannot be simplified through addition.