(1+92+35)× (92+35+47)-(1+92+35+47)× (92+35)
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(1+92+35)× (92+35+47)-(1+92+35+47)× (92+35)

=(92+35)× (92+35+47)+1x(92+35+47)-(92+35+47)× (92+35)-1x(92+35)

=1x(92+35+47)-1x(92+35)

=92+35+47-92-35

=47