Question

1/2 2/3×括号3/4-1/6括号除以7/9脱式计算

Answer 1

1/2 2/3×括号3/4-1/6括号除以7/9脱式计算
解：
1/2+ 2/3×（3/4-1/6）除以7/9
=1/2+2/3×7/12÷7/9
=1/2+1/2
=1