WAEC Mathematics 2020 Paper

Question : 12

Total: 48

Solve

\;\frac{1}{3}

\;\frac{2}{5}

(3 - 7x)

Solution:

$\;\frac{1}{3}$ (5 - 3x) < $\;\frac{2}{5}$ (3 - 7x)

5(5 - 3x) < 6(3 - 7x)

25 - 15x < 18 - 42x

- 15x + 42x < 18 - 25

$\;\frac{27x}{27}$ < $\;\frac{-7}{27}$

x < $\;\frac{-7}{27}$

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