УПРОСТИТЕ 5*X+3(7*X+18)=106

Question

УПРОСТИТЕ 5*X+3(7*X+18)=106

Answer 1

5х+3(7х+18)=106

5х+21х+ 54=106

26х=106-54

26х= 52

х=52:26

х= 2

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Answer 2

5х+21х+54=106

5х+21х=106-54

26х=52

х=2