Question

розвяжи ривняння
27:9·c=15 7·у+9=51 26+(72:n)=7·5

Answer 1

решение уравнений: c = 5 y = 6 n = 8

Answer 2

ето три уравнения

Answer 3

27:9×с=15                     7×у+9=51                      26+(72:н)=7×5
3с=15                           7у=51-9                         26+(72:н)=35
с=15:3                          7у=42                            72:н=35-26
с=5                               у=42:7                           72:н=9
27:9×5=15                     у=6                                н=72:9
                                     7×6+9=51                       н=8
                                                                          26+(72:8)=7×5