Решите уравнение: 17 8/25-(18-h)=7 18/25 1 21/70-7x/70+30/70=1 23/70

Question

Решите уравнение:
17 8/25-(18-h)=7 18/25
1 21/70-7x/70+30/70=1 23/70

Answer 1

18-h=17 8/25-7 18/25
18-h=16 25/25+8/25-7 18/25
18-h=16 33/25-7 18/25
18-h=9 15/25
18-h=9 3/5
h=18-9 3/5
h=17 5/5-9 3/5
h=8 2/5

91/70-7х/70+30/70=93/70/*70
91-7х+30=93
-7х=93-91-30
-7х= -28
х= -28:(-7)
х=4

Answer 2

17 8/25-(18-h)=7 18/25
18-h=17 8\25-7 18\25
18-h=16 33\25-7 18\25
18-h=9 15\25
h=18-9 15\25
h=17 25\25-9 15\25
h=8 10\25
h=8 2\5

1 21/70-7x/70+30/70=1 23/70
-7x\70=1 23\70-1 21\70-30\70
-7x\70=-28\70
x=-28\70*(-70\7)
x=4