Question

\(5\left[\left(85-35:7\right):8+90\right]-50\)

Answer 1

\(5.\left[\left(85-35:7\right):8+90\right]\)

\(=5.\left[\left(85-5\right):8+90\right]\)

\(=5.\left(80:8+90\right)\)

\(=5.\left(10+90\right)\)

\(=5.100\)

\(=500\)

Answer 2

\(5\left[\left(85-35:7\right):8+90\right]\)

\(=5\left[\left(85-5\right):8=90\right]-50\)

\(=5\left[80:8+90\right]-50\)

\(=5\left[10+90\right]-50\)

\(=5.100-50\)

\(=450\)

Answer 3

=5[(85 - 5)] : 8 + 90] - 50

=5[80 : 8 + 90] - 50

=5[10 + 90] - 50

=5 x 100 - 50

=500 - 50

=450

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Answer 4

\(5\left[\left(85-35:7\right):8+90\right]-50\)

\(=5\left[\left(85-5\right):8+90\right]-50\)

\(=5\left(80:8+90\right)-50\)

\(=5\left(10+90\right)-50\)

\(=500-50\)

\(=450\)