Question

Реши уравнения:y×30+100=700

Answer 1

$y*30+100=700$
$y*30=700-100$
$y*30=600$
$y=600:30$
$y=20$

Answer 2

30у + 100 = 700
30у = 700 - 100
30у = 600
у = 600 ÷ 30
у = 20.