Question

Решить уравнение:
209+(320*x-411)=438​

Answer 1

Ответ:

209+320*x-411=438

320*x-202=438

320*x=640

x=640:320

x=2

Answer 2

$209 + (320x - 411) = 438 \\ 209 + 320x - 411 = 438 \\ 320x = 438 - 209 + 411 \\ 320x = 640 \\ x = 2$