Question

Cuánto es
*x+3=8
*x-11=20
*x-7=13
*x-9=1
*x+15=30
*x-20=10
*x-11=2

Answer 1

x + 3 = 8 → x = 8 - 3 → x = 5

x - 11 = 20 → x = 20 + 11 → x = 31

x - 7 = 13 → x = 13 + 7 → x = 20

x - 9 = 1 → x = 1 + 9 → x = 10

x + 15 = 30 → x = 30 - 15 → x = 15

x - 20 = 10 → x = 10 + 20 → x = 30

x - 11 = 2 → x = 2 + 11 → x = 13

Espero haberte ayudado, saludos!