решить уравнение 5:3=t:6 5:4=25:y

) 3/25у-1,2=0,6              4) 7/13х-0,5=1,25              6) 2,7+2/9у=4,3     0,12у=0,6+1,2                   7/13х=1,75                          2/9у=4,3-2,7       у=15                                   0,538х=1,75                        0,22у=1,63)1,32х+4=10                                 х=3,25                              у=7,27     1,32х=10-4                    5) 5/6х-4,15=2,1       х=6/1,32                            0,833х=6,25        х=4,54                                     х=7,5