Solution
$$\frac{10}{7} (1 - 2.43 \times 10^{-3}) = 1.417 + x$$
$$\frac{10}{7}(1-0.00243)=1.417+x$$
$$\frac{10}{7}\times0.99757=1.417+x$$
$$1.4251=1.417+x$$
$$x=0.0081$$
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