Question

X-(81-72)•100=50•40 pomoqite pojalusta

Answer 1

$x - (81 - 72) \times 100 = 50 \times 40 \\ \\ \\ x - 9 \times 100 = 2000 \\ \\ \\ x - 900 = 2000 \\ \\ x = 2900.$

Ответ: 2900.