Question

$\frac{0.7x + 0.5}{3.5x + 4.5} = \frac{2}{5}$
Find x​

Answer 1

Solution
5 (0.7x + 0.5) = 2(3.5x + 4.5)
3.5x + 2.5. = 7x + 9
3.5x - 7x = 9 - 2.5
-3.5x. = 6.5
x. = 6.5➗3.5
x. = 1.87
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