Question

how can solve
1440= x-x/10

Answer 1

Dora !!!

$1440 = x - \frac{x}{10} \\ \\ 1440 = \frac{10x - x}{10} \\ \\ 1440 = \frac{9x}{10} \\ \\ 1440 \times \frac{10}{9} = x \\ \\ \frac{14400}{9} = x \\ \\ 1600 = x$

Check

$RHS = x - \frac{x}{10} \\ \\ \: \: \: \: \: \: \: \: \: \: \: = 1600 - \frac{1600}{10} \\ \\ \: \: \: \: \: \: \: \: \: \: = 1600 - 160 \\ \\ \: \: \: \: \: \: \: \: \: \: = 1440 = LHS$


@Dora