$$\frac{1-0,6+0,7-0,22}{2-0,7}=$$
$\frac{44}{65}\approx 0,676923077$
$$\frac{0,4+0,7-0,22}{2-0,7}$$
$$\frac{1,1-0,22}{2-0,7}$$
$$\frac{0,88}{2-0,7}$$
$$\frac{0,88}{1,3}$$
$$\frac{88}{130}$$
$$\frac{44}{65}$$
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$\frac{11 \cdot 2 ^ {2}}{5 \cdot 13} = 0.676923076923077$
