1.

[ { ( 7 + 5 – 1 ) ÷ 2 1 } × 2 3 ] ÷ ( 5 – 3 4 – 2 ) = ? 3 2 6 3 7 7 7

A. – 2
B. 2
C. – 1
D. 1
Answer» D. 1


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