Answer:
35
Step-by-step explanation:
37 + x = 72
x = 72 - 37
x = 35
8(1/x) = 4(1/10)
lets say the number is x
eight times the reciprocal of a number equals 4 times the reciprocal of 10
8 * 1//x = 4 * 1/10
8/x = 4/10 , cross multiply
4x =8*10, divide both sides by 4
x= 80/4
x= 20
