a) X+37=85
X=85-37
X=48
48+37=85
85=85
6) 156+y=218
Y=218-156
Y=62
156+62=218
218=218
В)?
R) m-94=18
M=94+18
M=112
112-94=18
18=18
A) 2041 - n = 786
N=2041-786
N=1255
2014-1255=786
786=786
e) p - 7698 = 2302
P=2502+7698
P=10000
10000-7698=2302
2302=2302
a) (x + 15) - 8 = 17
X+15=17+8
X+15=25
X=25-15
X=10
(10+15)-8=17
17=17
6) (24 + x) - 21 = 10
24+x=21+10
24+x=31
X=31-24
X=7
(24+7)-21=10
10=10
B) (45 - y) + 18 = 58
45-y=58-18
45-y=40
Y=45-40
Y=5
(45-5)+18=58
58=58
r) (y - 35) + 12 = 32
Y-35=32-12
Y-35+20
Y=35+20
Y=55
(55-35)+12=32
32=32
A) 56 - (x + 12) = 24
X+12=56-24
X+12=32
X=32-12
X=20
56-(20+12)=24
24=24
e) 55 - (x - 15) = 30
X-15=30-55
X-15=25
X=25+15
X=40
55-(40-15)=30
30=30
ответ: за 12 дней