Answer:
2 can be taken out of both so the LCD is 2
Step-by-step explanation:
The ratio would be 1:4, I would start with dividing each number by 2 then working from there. With diving by two you would end up with 3:12 which you then can divide by 3 since 12 is divisible by 3. This would get you 1:4.
The fewest number of expressions is 3.
12x-3x=9x 9+7=16
9x+16=25x
