Б)8y+56+4y=80
8y + 4y = 80 – 56
12y = 24
y = 2
В)11р-4р-25=24
11r – 4r = 24 + 25
7r = 49
r = 7
Г)18d+5d-23=23
18d + 5d = 23 + 23
23d = 46
d = 2
Б)8y+56+4y=80
8y + 4y = 80 – 56
12y = 24
y = 2
В)11р-4р-25=24
11r – 4r = 24 + 25
7r = 49
r = 7
Г)18d+5d-23=23
18d + 5d = 23 + 23
23d = 46
d = 2