Tìm x
103( 5-x) = 103
Tìm x,biết
7*x+5*(x+11)=103
\(7\times x+5\times\left(x+11\right)=103\)
\(7\times x+5\times x+55=103\)
\(12\times x=48\)
\(x=4\)
Không thực hiện phép tính, hãy tìm số thích hợp với dấu “?”.
49 x 37 = 37 x ?
(214 x 25) x 4 = ? x (25 x 4)
103 x 18 + 103 x 12 = 103 x (18 + ?)
49 x 37 = 37 x 49
(214 x 25) x 4 = 214 x (25 x 4)
103 x 18 + 103 x 12 = 103 x (18 + 12)
Tìm số tự nhiên x biết:
a, 71.2 – 6.(2x+5) = 10 5 : 10 3
b, 5 x + 3 4 . 6 8 = 6 9 . 3 4
c, 12:{390:[5. 10 2 – ( 5 3 + x . 7 2 )]} = 4
d, 5 3 .(3x+2):13 = 10 3 : 13 5 : 13 4
a, 71.2 – 6.(2x+5) = 10 5 : 10 3
71.2 – 6.(2x+5) = 10 2
6.(2x+5) = 71.2 – 100
6.(2x+5) = 42
x = 1
b, 5 x + 3 4 . 6 8 = 6 9 . 3 4
5 x + 3 4 . 6 8 = 6 8 . 6 . 3 4
5 x + 3 4 = 6 8 . 6 . 3 4 : 6 8 = 6 . 3 4
5x = 6 . 3 4 - 3 4 = 5 . 3 4
x = 3 4
c, 12:{390:[5. 10 2 – ( 5 3 + x . 7 2 )]} = 4
390:[5. 10 2 – ( 5 3 + x . 7 2 )] = 12:4 = 3
5. 10 2 – ( 5 3 + x . 7 2 ) = 390:3 = 130
5 3 + x . 7 2 = 5. 10 2 – 130 = 370
x . 7 2 = 370 – 5 3 = 245
x = 245: 7 2 = 5
d, 5 3 .(3x+2):13 = 10 3 : 13 5 : 13 4
5 3 .(3x+2):13 = 10 3 : 13
3x+2 = 10 3 : 13 : 5 3 .13 = 8
x = 2
tìm x : 264 * ( 5*x+103) =12
Tìm số nguyên x, biết rằng
1) (-5) +x =7
2) (-14)-x+(-15)=-10
3) 12+x+(-5)= -18
4) x-(-19)-(11)= 0
1: x=7+5=12
2: =>-29-x=-10
=>x+29=10
=>x=-19
3: =>x+7=-18
=>x=-25
4: =>x+19-11=0
=>x+8=0
=>x=-8
tìm a biết: A x 50% + A x 1/5 + A + 98 = 103
A x 50% + A x 1/5 + A + 98 = 103
=> \(A\times\frac{1}{2}+A\times\frac{1}{5}+A+98=103\)
=> \(A\times\left(\frac{1}{2}+\frac{1}{5}+1\right)+98=103\)
=> \(A\times\frac{17}{10}=103-98=5\)
=> \(A=5:\frac{17}{10}=5\cdot\frac{10}{17}=\frac{50}{17}\)
A x 50% + A x \(\dfrac{1}{5}\) + A + 98 = 103
A x \(\dfrac{50}{100}\) + A x \(\dfrac{1}{5}\) + A + 98 = 103
A x \(\dfrac{1}{2}\) + A x \(\dfrac{1}{5}\) + A + 98 = 103
A x (\(\dfrac{1}{2}\) + \(\dfrac{1}{5}\) + 1) + 98 =103
A x \(\dfrac{17}{10}\) + 98 = 103
A x \(\dfrac{17}{10}\) = 103 - 98
A x \(\dfrac{17}{10}\) = 5
Tìm x: 964 - x = 103
Tìm x biết
| 2x - 3 | + 4 × 52 = 103
| 2x - 3 | + 4 x 52 = 103
| 2x - 3 | + 100 = 103
| 2x - 3 | =3
=> 2x-3 = |3|
=>2x-3= -3 hay 2x-3 = 3
=>x=0 hay x=3
Vậy x thuộc {0; 3}
| 2x - 3 | + 4 x 52 = 103
| 2x - 3 | + 100 = 103
| 2x - 3 | =3
=> 2x-3 = |3|
=>2x-3= -3 hay 2x-3 = 3
=>x=0 hay x=3
Vậy x thuộc {0; 3}
| 2x - 3 | + 4 x 52 = 103
| 2x - 3 | + 100 = 103
| 2x - 3 | =3
=> 2x-3 = |3|
=>2x-3= -3 hay 2x-3 = 3
=>x=0 hay x=3
Vậy x thuộc {0; 3}
Tìm x 2806 : x =103 ( dư 25 )
2806 : x = 103 ( dư 25 )
x = ( 2806 - 25 ) : 103
x = 2781 : 103
x = 27