It's not easy for them to study math.
形式主语，纯手工打造。
望采纳。
对于他们来说学习数学是不容易的
It is not easy for them to learn maths.
or
It is difficult for them to learn maths.
or
Learning maths is difficult /hard for them.
or
Learning maths is not easy for them.
祝你开心如意！
For them,studying math is not easy.
不满意可以追问，满意请采纳哈
It is difficult to learn math for them
learning mathematic is diffcult(not easy) to them.
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