Question

Решите уравнение

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

Answer 1

2,53х+0,47х=15
3х=15
х=15:3
х=5
проверка
2,53×5+0,47×5=15
12,65+2,35=15
15=15
3,28х+4,72х=17
8х=17
х=17:8
х=2,125
проверка
3,28×2,125+4,72×2,125=17
6,97+10,03=17
17=17
84,6х-44,6х=35
40х=35
х=35:40
х=0,875
проверка
84,6×0,875-44,6×0,875=35
74,025-39,025=35
35=35
39,49х+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