You multiply fractions simply by multiplying numerators and denominators with each other:

4/100= x/4,500
18,000/100= $180x2.5 = $450
Answer:
the shortest side is 855 miles long.
Step-by-step explanation:
a + b + c = 3078 miles
a = b - 71
c = b + 371
=>
(b-71) + b + (b+371) = 3078
3b + 300 = 3078
3b = 2778
b = 926 miles
a = 926 - 71 = 855 miles
c = 926 + 371 = 1297 miles
Y=-6 would be one equation
5/8 inches longer since 8/8 - 3/8 = 5/8