210:x=420:6 помогите пж

Question

210:x=420:6 помогите пж

Answer 1

210:x=420:6
210:х=70
x=210:70
x=3
--------------
210:3=420:6
70=70

Answer 2

210:x=420:6
210:x=70
x=210:70
x=3
-----------------------
210:3=420:6
3=3