To get the answers of these questions, you just need to get the common denominator. To get those common denominators. you just have to multiply the first fraction with the second fraction's denominator and multiply the second fraction with the first fraction's denominator. Doing this will give you an answer of 24/40 and 35/40 for the first fraction, 8/12 and 3/12 for the second fraction in the question, and 35/50 and 40/50 for the final fraction in the question.
Since ABCD is a square, this means all sides are equilateral. So just write the equation 2x - 14 = x + 15. Convert this equation to 2x - x = 15 + 14 --> x = 29.
