Помогите пжжжжпжпжпжжпжпж

Question

Помогите пжжжжпжпжпжжпжпж

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Answer 1

(2/3х+1/6)*1,2=2,6
(2/3х+1/6)=2,6/1,2
(2/3х+1/6)=2 1/6
2/3х=2 1/6-1/6
2/3х=2
х=2/2/3
х=3