contestada

5 times the difference of a number and 20 is the same as half the sum of 4 more than 4 times a number

Respuesta :

5(n - 20) = 1/2(4n + 4)
5n - 100 = 2n + 2
5n - 2n = 2 + 100
3n = 102
n = 102/3
n = 34 <== ur number