Question

решить уравнение ( 720-х * 6):9=60

Answer 1

80 - 6x/9=60 -6x/9=-20 6x/9 =20 6x = 20*9 =180 x = 180/6 =30

Answer 2

720-х*6=540; -х*6=540-720=-180; х*6=180; х=30;