Question

2/5*30/30+x=x/30+x
find the value of x​

Answer 1

$\frac{2}{5} \times \frac{30}{30} + x = \frac{x}{30} + x \\ \frac{2}{5} + x = \frac{x}{30} + x \\ \frac{2 + 5x}{5} = \frac{x + 30x}{30} \\ \bold {by \: cross \: multiplication} \\ 30(2 + 5x) = 5(31x) \\ 60 + 150x = 155x \\ 60 = 155x - 150x \\ 60 = 5x \\ x = \frac{60}{5} = 12 \\ x = 12$

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