Question

Помогите решить уравнение

Answer 1

(35.8-х)/2.1=1.3
35.8-х=1.3*2.1
35.8-х=2.73
х=35.8-2.73=33.07

0.9*(283-х)=17.01
254.7-0.9х=17.01
0.9х=254.7-17.01
0.9х=237.69
х=237.69/0.9=264.1