Решите уравнение

1,53х+0,47х=15
3,28х+4,72х=17
84,6х-44,6х=35
39,49х+10,51х=18

2,53х+0,47х=15 3х=15 х=15:3 х=5проверка2,53×5+0,47×5=1512,65+2,35=15 15=153,28х+4,72х=17 8х=17 х=17:8 х=2,125проверка3,28×2,125+4,72×2,125=17 6,97+10,03=17 17=1784,6х-44,6х=35 40х=35 х=35:40 х=0,875проверка84,6×0,875-44,6×0,875=35 74,025-39,025=35 35=3539,49х+10,51х=18 50х=18 х=18:50 х=0,36 39,49×0,36+10,51×0,36=18 14,2164+3,7836=18 18=18