using opposite operation, we take the 5 the other side and changing the operation. so now from divide by 5, it will be multiply by 5 on the otherside. thus -7 ×5= -35
Just set up a proportion with the original numbers and then the numbers you want to find like so: (x1/y1)=(x2/y2) and since you want to find the second y value, just leave y as a variable like so: (15/24)=(3/y) after this just cross multiply and get the answer: 15y=72.....y=4.8
