Решите уравнение 1) 9x-4x+39=94 2) 7y+2y-34=83

Question

Решите уравнение 1) 9x-4x+39=94
2) 7y+2y-34=83

Comments

5х=55l:5 x=11 2) 9у=117l:9 y=13

Answer 1

...=94
5Х+39=94
5Х=94-39=55
Х=55:5
Х=11

...=83
9У=83+34=117
У=117:9
У=13