Question

$(\frac23+\frac12)\div(\frac23-\frac12)\div7=?$

• A. 7/42
• B. 1/42
• C. 1/7
• D. 1

Answer 1

Answer:

D. 1

$(\frac23+\frac12)\div(\frac23-\frac12)\div7$

$=\frac{4+3}{6}\div\frac{4-3}{6}\div7$

$=\frac76\times\frac61\times\frac17=1$