Question

determine os valores de x nas equacoes abaixo
5x =90
x+82=90
10x=90
x+14=90

Answer 1

5x = 90 → x = 18

x = 90/5

x = 18

x + 82 = 90 → x = 8

x = 90 - 82

x = 8

10x = 90 → x = 9

x = 90/10

x = 9

x + 14 = 90 → x = 76

x = 90 - 14

x = 76