Как 2/11x+5/13=0.45x+1.2

Question

Как 2/11x+5/13=0.45x+1.2

Answer 1

2/11х-45/100х=1 2/10-5/13
х(2/11-9/20)=12/10-5/13
х(40-99)/220=6/5-5/13=(78-25)13=53/13
х=53/13:(-59/220)=-(53*220)/(13*59)=-11660/767=-15 155/767
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