Question

resuelve la ecuaciones
1-
$5x - 2 = 3$
2-
$7 + x + 105 = 320$
3-
$2 \div x + 18 = 20$

Answer 1

5x-2=3
5x = 3+2
5x =5
x= 5/5
x=1

7+x+105=320
x + 112=320
x = 320-112
x= 208