Question

(1х+7/9х)=240 решите уравнение

Answer 1

Х+7/9х=240; 1 7/9х=240; 16/9х=240; х=240• 9/16= 135; ответ х=135

Answer 2

X(1+7/9)=240
(1=9/9)
X(9/9+7/9)=240
X(16/9)=240
X=240:16/9
X=240/1:16/9
X=135