tìm x
a)x + 5,28 = 9,19 b) x + 37,66 = 80,84
c) x - 34,87 = 58,21 d) 76,22 - x = 38,08
a, x +5,28 =9,19
b,x +37,66 = 80,34
c,x - 34,87 = 58,21
d, 76,22 - x=38,08
a, x +5,28 =9,19
x =9,19-5,28
x = 3,91
b,x +37,66 = 80,34
x =80,34-37,66
x =42,68
c,x - 34,87 = 58,21
x =58,21+34,87
x =122,08
d, 76,22 - x=38,08
x =76,22-38,08
x =38,14
k dùm nha mọi người
a x+5,28=9,19 x=9,19-5,28 x=3,91
b x+37,66=80,34 x=80,34-37,66 x=42,68
c x-34,87=58,21 x=58,21+34,87 x=93,08
d 76,22-x=38,08 x=76,22-38,08 x=38,14
tìm x :
x + 5,28 = 9,19
x - 34,87 = 58,21
x + 37,66 = 80,94
76,22 - x = 38,08
a) x + 5,28 = 9,19 b) x - 34,87 = 58,21 c) x + 37,66 = 80,94
x = 9,19 - 5,28 x = 58,21 + 34,87 x = 80,94 - 37,66
x = 3.91 x = 89.08 x = 43,28
a, x+5,28=9,19 c, x+37,66=80,84
x=3,91 x=43,18
b, x-34,87=58,21 d, 76,22-x=38,08
x=93,08 x=38,14
a) 5,22=9,08
b) x-14,66=3,34
c) 8,42 : x = 2.16
d) (x-5,6)-3,2=4,5
x - 34,87=58,21
x : 9,4=18,7 + 4,8
x = 58,21 + 34,87
x = 93,08
x : 9,4 = 23,5
x = 220,9
x - 34,87=58,21
x = 58,21 + 34,87
x = 93.08
x : 9,4=18,7 + 4,8
x : 9,4= 23.5
x = 23.5 x 9.4
x = 220.9
bài 2 : Tìm x
( 99,5 - x ) + 3,82 = 30
x + 37,66 = 80,94
76,22 - x = 38,08
36,7- x = 21,205
x + 17,67 = 100 - 63,2
Bài 3 : tính nhanh
15,27 - 4,13 - 1,14
60 - 26,75 - 13,25
38,25 - 18,75 + 21,64 - 11,64 + 9,23
( 72,69 + 18,47 ) - ( 8,47 + 22,69 )
60- 13, 75 - 26,25
15,27 - 4,18 - 2,09
45,28 + 52,17 - 15,28 - 12,17
( 8,27+ 7,16 + 9,33 ) - ( 7,27 + 6,16 + 8,33 )
Bài 2:a)\(\left(99,5-x\right)+3,82=30\)
\(99,5-x=30+3,82=33,82\)
\(x=99,5-33,82=65,68\)
b)\(x+37,66=80,94\)
\(x=80,94-37,66=43,28\)
c)\(76,22-x=38,08\)
\(x=76,22-38,08=38,14\)
d)\(36,7-x=21,205\)
\(x=36,7-21,205=15,495\)
e)\(x+17,67=100-63,2\)
\(x+17,67=36,8\)
\(x=36,8-17,67=19,13\)
Bài 3:
a)\(15,27-4,13-1,14\)
\(=\)\(15,27-1,14-4,13\)
\(=14,13-4,13=10\)
b)\(60-26,75-13,25\)
\(=\)\(60-\left(26,75+13,25\right)\)
\(=60-40=20\)
c)\(38,25-18,75+21,64-11,64+9,23\)
\(=\left(38,25-18,75\right)+\left(21,64-11,64\right)+9,23\)
\(=9,5+10+9,3\)
\(=19,5+9,3=28,8\)
Phần này mk ko chắc đâu nhé.
d)\(\left(72,69+18,47\right)-\left(8,47+22,69\right)\)
\(=72,69+18,47-8,47-22,69\)
\(=\left(72,69-22,69\right)+\left(18,47-8,47\right)\)
\(=50+10=60\)
e)\(60-13,75-26,25\)
\(=60-26,25-13,75\)
\(=33,75-13,75=20\)
g)\(15,27-4,18-2,09\)
\(=15,27-2,09-4,18\)
\(=13,18-4,18=9\)
h)\(45,28+52,17-15,28-12,17\)
\(=\left(45,28-15,28\right)+\left(52,17-12,17\right)\)
\(=30+40=70\)
i)\(\left(8,27+7,16+9,33\right)-\left(7,27+6,16+8,33\right)\)
\(=8,27+7,16+9,33-7,27-6,16-8,33\)
\(=\left(8,27-7,27\right)+\left(7,16-6,16\right)+\left(9,33-8,33\right)\)
\(=1+1+1=3\)
Viết cái đống này mak hoa cả mắt. Mk đã tốn công vậy rùi nên bn nhất định phải k cho mk đó nha.(ko mk giận đó)
2. Tìm y
a) y : 15 - 34,87 = 52,21 + 6
b) 76,22 - y x 3 = 30,61 x 2
a 48,24: x =12=
x: 15-34,87=
b x x3 x 5=2,7 x =
76,22-x x3 = 30,61x2
trả lời giúp mình
a) y : 15 - 34,87= 52,21 + 6 b) 76,22 = y x 3 = 30,61 x 2
a) y / 15 - 34,87 = 52,21 + 6
y / 15 - 34,87 = 58,21
y / 15 = 58,21 + 34,87
y / 15 = 93,08
y = 93,08 * 15 = 1396,2
b) 76,22 = y * 3 = 30,61 * 2
76,22 = y * 3 = 61,22
=> 76,22 = 61,22 ( ?! )
Sai đề
a) y : 15 - 34,87= 52,21 + 6 b) 76,22 = y x 3 = 30,61 x 2
a) y : 15 - 34,87 = 52,21 + 6 ( tui biet moi cau a thoi)
y : 15 - 34,87 = 58,21
y : 15 = 58,21 - 34,87
y : 15 = 23.34
y = 351
Trl
-Bạn nguyễn minh thu làm đúng rồi nhé ~!
Hok tốt
nhé bạn
Tìm X :
a) X : 15 - 34,87 = 52,21 + 6 b) 76,22 - X x 3 = 30,61 x 2
b) 76,22 - X x 3 = 30,61 x 2
76,22 - X x 3= 61.22
X x 3= 76,22 -61.22=15
x=5
a) X : 15 - 34,87 = 52,21 + 6
X : 15 - 34,87 = 58.21
x:15=58,21+34.87=93.08
x= 93.08:15~6.3
x:15-34,87=52,21+6 76,22-x.3=30,61.2
(=) x:15=52,21+6+34,87 (=) 76,22-x.3=61,22
(=) x:15=93,08 (=) x.3=76,22-61,22
(=) x=1369,2 (=) x.3=15
(=) x=15:3
(=)x=5