\(a,4800:\left(x\times16\right)=25\)
\(x\times16=4800:25\)
\(x\times16=192\)
\(x=192:16\)
\(x=12\)
\(b,2009:\left(71:x\right)=2009\)
\(71:x=2009:2009\)
\(71:x=1\)
\(x=71\)
a,4800[x nhân 16]=25 b,2009:[71:x]=2009
x nhân 16=4800:25 71:x=2009:2009
x nhân 16=192 71:x=1
x=192:16 x=71:1
x=12 x=71