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
1) 2 целых 3/10*1,1= 23/10*11/10=253/100= 2 целых 53/100
2) 7 целых 1/100*6,3=701/100*63/10=44163/1000=44 целых 163/1000
3) 4 целых 1/5*2,5=21/5*25/10=(21*2)/(5*2)*25/10=42/10*25/10=1050/100=105/10=21/2=10 целых 1/2
4) 7 целых 1/20*1,4= 141/20*14/10=(141*5)/(20*5)*14/10=705/100*14/10=9870/1000=987/100 = 9 целых 87/100
5) 6 целых 1/4*3,3=25/4*33/10=(25*25)/(4*25)*33/10=625/100*33/10=20625/1000=4125/200=825/40 =165/8=20 целых 5/8
6) 11/50*3,3=(11*2)/(50*2)*33/10=22/100*33/10=726/1000=363/500
7) 4 целых 1/2 *5,4=9/2*54/10=(9*5)/(2*5)*54/10=45/10*54/10=2430/100=243/10=24 целых 3/10
8) 6,5*1/2=65/10*(1*5)/(2*5)=65/10*5/10=325/100=13/4=3 целых 1/4
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
1) 2 целых 3/10*1,1= 23/10*11/10=253/100= 2 целых 53/100
2) 7 целых 1/100*6,3=701/100*63/10=44163/1000=44 целых 163/1000
3) 4 целых 1/5*2,5=21/5*25/10=(21*2)/(5*2)*25/10=42/10*25/10=1050/100=105/10=21/2=10 целых 1/2
4) 7 целых 1/20*1,4= 141/20*14/10=(141*5)/(20*5)*14/10=705/100*14/10=9870/1000=987/100 = 9 целых 87/100
5) 6 целых 1/4*3,3=25/4*33/10=(25*25)/(4*25)*33/10=625/100*33/10=20625/1000=4125/200=825/40 =165/8=20 целых 5/8
6) 11/50*3,3=(11*2)/(50*2)*33/10=22/100*33/10=726/1000=363/500
7) 4 целых 1/2 *5,4=9/2*54/10=(9*5)/(2*5)*54/10=45/10*54/10=2430/100=243/10=24 целых 3/10
8) 6,5*1/2=65/10*(1*5)/(2*5)=65/10*5/10=325/100=13/4=3 целых 1/4