Which of the following best describes the solution to the equation below?

30+5x=12x

x = 30/7

Step-by-step explanation:

you want to cancel out the coefficient, which is the number that has a variable next to it, in this case 5x is the variable. so we isolate 30 by subtracting 5x from 5x, then subtract from 12x, which is 7x. so 30 = 7x, then divide 7x by 7, which is x. but when dividing the answer, divide 30 too, so therefore x = 30/7. hope this helped, have a great day

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared