Question

решить уравнение:34,2- (17,9-y) = 22

Answer 1

17,9-y=34,2-22

17,9-y=12,2

y=17,9-12,2

y=5,7

 

Answer 2

34.2-(17.9-у)=22

17.9-у=34.2-22

17.9-у=12.2

у=17.9-12.2

у=5.7

проверка

34.2-(17.9-5.7)=22