Their GCF is 10:
$${\frac{{\mathtt{40}}}{{\mathtt{10}}}} = {\mathtt{4}}$$
$${\frac{{\mathtt{30}}}{{\mathtt{10}}}} = {\mathtt{3}}$$
Their GCF is 10:
$${\frac{{\mathtt{40}}}{{\mathtt{10}}}} = {\mathtt{4}}$$
$${\frac{{\mathtt{30}}}{{\mathtt{10}}}} = {\mathtt{3}}$$