Question

Помогите поскорее пожалуйста! 39x-((6x-5)-(12-7x))=42

Answer 1

39х-(6х-5-12+7х)=42

39х-6х+5+12-7х=42

26х+17=42

26х=25

х=25/26

Answer 2

39x-(6x-5-12+7x)=42
39x-(13x-17)
39x-13x+17=42
26x=42-17
x=25/26 
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