Question

решить уравнение (64:Х+138)-50=90

Answer 1

$1)(64 \div x + 138) - 50 = 90$
$( \frac{64}{x} + 138) - 50 = 90$
$\frac{64}{x} + 138 - 50 = 90$
$\frac{64}{x} + 88 = 90$
$\frac{64}{x} = 90 - 88$
$\frac{64}{x} = 2$
$2x = 64$
$x = 32$