Question

Ex. 1) 4x +7x+x.....?​

Answer 1

Answer: 12x

Step-by-step explanation:

Each term has an x attached to it. We add the numbers in front

4x+7x+x = 4x+7x+1x = (4+7+1)x = 12x

Think of it like saying

4 boxes + 7 boxes + 1 box = 12 boxes

Replace each "boxes" with the letter "x".