(2.7Y+3.08Y)/1.7-3.08=12.2

Question

(2.7Y+3.08Y)/1.7-3.08=12.2

Answer 1

итак:

1

5,78у:1.7=12.2+3.08

2

3.4у=15.28

3

у=4целых 84\170

Answer 2

15,28=1,59у+1,81у  15,28=3,4у     у=4,49