a]48751-[10425+y]=3828:12 b][2367-y]-[2 mũ 10-7]=15 mũ 2-20

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1. a)

   $48751-(10425+y)=3828÷12$

   $48751-(10425+y)=319$

   $10425+y=48432$

   $y=38007$

   b)

   $(2367-y)-(2$$\sqrt{10}$$-7)=15$$\sqrt{2}$$-20$

   $(2367-y)-(1024-7)=225-20$

   $2367-y-1017=205$

   $2367-y=1222$

   $y=1145$

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