Question

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Answer 1

$\frac{8x + 5.2}{2.4} = \frac{11}{2} \\ 2(8x + 5.2) = 11 \times 2.4 \\ 16x + 10.4 = 26.4 \\ 16x = 26.4 - 10.4 \\ 16x = 16 \\ x = \frac{16}{16} \\ x = 1$

$\frac{4}{1.6} = \frac{7x - 2}{10.4} \\ 1.6(7x - 2) = 10.4 \times 4 \\ 11.2x - 3.2 = 41.6 \\ 11.2x = 41.6 + 3.2 \\ 11.2x = 44.8 \\ x = \frac{44.8}{11.2} \\ x = 4$