Question

решите уравнение 111,11 :(21,45-1,9х)-3,2=51

Answer 1

111,11:(21,45-1,9х)=51+3,2

111,11:(21,45-1,9х)=54,2

21,45-1,9х=111,11:54,2

21,45-1,9х=2,05

1,9х=21,45-2,05

1,9х=19,4

х=10,21

Answer 2