在你这个年龄，你应该会演算分数减法了。

At this age, you should be able to subtract one fraction from another.

youdao

在这个年龄，他应该能够用分数减分数了。

At this age, he should be able to subtract one fraction from another.

youdao

在这个年龄，他应该能够用分数减分数了。

At this age, he should be able to subtract one fraction from another.

youdao