George says to subtract fractions with different denominators, you always have to multiply the denominators to find the common denominator; for example: 3/8 - 1/6 = 18/48 - 8/48 Is George correct? Why or why not?

Th perimeter of a rectangular garden is 150 feet. the length is 50 feet longer than the width, w. which equation could be used to calculate the width of the garden? a.) 2w+ 2(w-50) =150 b.) 2w+50 + 2w =150 c.) 2(w+50) + w =150 d.) 2w+ 2(w + 50) = 150 need asap. will give brainliest !