Answer: m = 40
Step-by-step explanation:
If we have the fractions 5/7 and m/56 we need the denominators to be equivalent. So you need to multiply 7 by something to equal 56 (shown as 7x = 56) 56/7 = 8. So you would need to multiply 7 by 8. What ever you do to the denominator you must also do to the numerator so now 5 must be multiplied by 8 giving you a answer of m = 40