2600+x:4=3845
2600 + x : 4 =3845
2600+x:4=3845
x:4=3845-2600
x:4=1245
x=1245.4
x=4980
2600+x:4=3845
x:4=3845-2600
x:4=1245
x=1245.4
x=4980
2600 + X : 4 = 3845 bằng bao nhiêu ????
Tìm x biết (2600 + x) : 4= 3845
(2600+x):4=3845
2600+x=3845.4
2600+x=15380
x=15380-2600
x=12780
( 2600 + x ):4=3845
2600 + x = 3845 x 4
2600 + x = 15380
x = 15380 - 2600
x = 12780
Vậy x bằng 12780
a) 2600 + X : 4 = 3845
b) X x 3 + 1200 = 3600
a) 2600 + X : 4 = 3845 X : 4 =3845-2600 X : 4 =1245 X = 1245x4 X = 4980 b) X x 3 +1200 =3600 X x 3 =3600-1200 X x 3 =2400 X =2400:3 X =600
Tìm X:
a) 2600 + X : 4 = 3845
b) X x 3 + 1200 = 3600
a ) X : 4 = 3845 - 2600 b) X x 3 = 3600 - 1200
X : 4 = 1245 X x 3 =2400
X = 1245 x 4 =4980 X = 2400 : 3 = 800
a)2600+x:4=3845
x:4=3845-2600
x-4=1245
x =1245+4
x=1249
b)x.3+1200=3600
x.3 =3600-1200
x.3 =2400
x =2400:3
x =800
2417 * 3 =
`1528 *4=
3845 *2 =
1214 * 5 =
2417x3=7251
1528x4=6112
3845x2=7690
1214x5=6070
2417 x 3 = 7251
1528 x 4 = 7112
3845 x 2 = 7690
1214 x 5 = 6070
2417 x 3 = 7251
1528 x 4 = 6112
3845 x 2 = 7690
1214 x 5 = 6070
123 -5 . (x + 4) =38
(3.x - 16).343= 2. 2401
(2600 + 6400)-3 x =1200
6x - 72 : 2 - b4. 28= 5628
#)Giải :
\(123-5\left(x+4\right)=38\)
\(\Leftrightarrow5\left(x+4\right)=85\)
\(\Leftrightarrow x+4=17\)
\(\Leftrightarrow x=13\)
\(\left(3x-16\right)343=2.2401\)
\(\Leftrightarrow\left(3x-16\right)343=4802\)
\(\Leftrightarrow3x-16=14\)
\(\Leftrightarrow3x=30\)
\(\Leftrightarrow x=10\)
\(\left(2600+6400\right)-3x=1200\)
\(\Leftrightarrow9000-3x=1200\)
\(\Leftrightarrow3x=7800\)
\(\Leftrightarrow x=2600\)
P/s : Câu cuối cùng lỗi chỗ b4 ph k ? hay là tìm cả b và x thế ???
\(123-5\left(x+4\right)=38\)
\(=>123-5x-20=38\)
\(=>-5x=-123+20+38\)
\(=>-5x=-65\)
\(=>x=13\)
b, \(\left(3x-16\right)343=2.2401\)
=>1029x -5488= 4802
=> 1029x=5488+4802
=> 1029x= 10290
=> x=10
c, (2600+6400)-3x=1200
=> 9000-3x=1200
=> -3x= -9000+1200
=> -3x= -7800
=> x=2600
d,
k hiểu đề
Tìm x biết
a)5+6+7+...+x=620
b)2+4+6+...+x=2525
c)3+5+7+...+x=2600
d)1+4+7+...+x=1717
tìm x
a) (2600+6400) - 3. x = 1200
b) [(6x - 72) : 2 - 84]. 28= 5628
c) (3. x - 24) . 73= 2. 74
a) 9000 - 3 . x=1200
3.x =9000 - 1200
3.x =7800
x =7800:3
x=2600
b) [(6x - 72) : 2 - 84]. 28 = 5628
[(6x - 72) : 2 - 84] = 5628 : 28
(6x - 72) : 2 - 84 = 201
(6x - 72) : 2 = 201 + 84
(6x - 72) : 2 = 285
(6x - 72) = 285 . 2
6x - 72 = 570
6x =570+72
6x = 642
x = 642 : 6
x = 107
c) (3. x - 2^4) = 2. 7^4 : 7^3
(3. x - 16) = 2. 7
3. x - 16 = 14
3. x = 14 + 16
3. x = 30
x = 30 : 3
x = 10
a) (2600+6400) - 3. x = 1200
9000-3.x=1200
3.x=9000-1200
3.x=7800
x=7800:3
x=2600
b) [(6x - 72) : 2 - 84]. 28= 5628
[(6x - 72) : 2 - 84] =5628:28
(6x - 72) : 2 - 84 =201
(6x - 72) : 2 =201+84
(6x - 72) : 2 = 285
(6x - 72) =285x2
6x - 72 =570
6x =570+72
6x =642
x =642:6
x =107
c) (3. x - 24) . 73= 2. 74
tí nk làm,mà bài này dễ bạn tự suy nghĩ đi,tính lũy thừa trước nà