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Question:
A1/7
B1/9
C2/9
D3/7
Answer:
1/7 + [ 7/9 - 5/9 - 2/9 ] = 1/7 + 0 = 1/7
Related Questions:
72×9327×343=? \frac {7^2 \times 9^3}{27 \times 343} = ?27×34372×93=?
12÷23+1=\frac{1}{2} \div \frac{2}{3} + 1 = 21÷32+1= ______
