Решите сложные уравнения:
(k+5)x7-54=(k+5)x4
(y+1)x18=36+12x(y+1)
Заранее спасибо!
(k+5)x7-54=(k+5)x4
(y+1)x18=36+12x(y+1)
Заранее спасибо!
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7k+35-54=4k+20
7k-4k=20+54-35
3k=39
k=13
2)(y+1)*18=36+12*(y+1)
18y+18=36+12y+12
18y-12y=36+12-18
6y=30
y=5 .