$$1.7 \frac { 4 } { 7 } = \frac { 28 } { 49 } =$$
$\text{false}$
$$7\left(1.7\times 7+4\right)=28$$
$$7\left(11.9+4\right)=28$$
$$7\times 15.9=28$$
$$111.3=28$$
$$\text{false}$$
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