a) 10 - (x – 3): 2 = 72 – 110
[ ( 6x - 72 ) : 2 - 84 ] . 4 = 8.3
720 : [ 41 - ( 2x -5 ) ] = 3^3 . 8
x + ( x+1) + ...+ ( x+10) = 110
x -56 : 4= 16
101 +(36 –4x) =105
2(x-51) = 2.23+ 20
10 -(x –3): 2 = 72–110
2x –49 = 5.32
[(8x -12) : 4].33= 36
52x –3–2 . 52= 52. 3
(x3–7) : 4 = 5
a: x-56:4=16
nên x-14=16
hay x=30
b: \(101+\left(36-4x\right)=105\)
\(\Leftrightarrow36-4x=4\)
hay x=8
Vì a: x-56:4=16
=>x-14=16
Hay:x=30
Vì b: 101+(36−4x)=105101+(36−4x)=105
⇔36−4x=4⇔36−4x=4
Hay:x=8
Vậy x={30:8}
Nếu sai thì thui nhá,đừng chửi mình!
(110)^2 . x = 72+10.13.x
b) -2(x+3)+3.(x-2)+5.(3-x) =45
ukm. ngày mai, khi nào ăn tết xong, ok
chưa ăn tết đã bắt bù đầu vào toán oy,bận chơi tết ,để sau nhé bn
eu321784374732857
a) 45 – (x + 9) = 6
b) 89 – (73 – x) = 20
c) (x + 7) – 25 = 13
d) 198 – (x + 4) = 120
e) 2(x- 51) = 2.23 + 20
f) 450 : (x – 19) = 50
4(x – 3) = 72 – 110
\(a,\Leftrightarrow x+9=39\Leftrightarrow x=30\\ b,\Leftrightarrow73-x=69\Leftrightarrow x=4\\ c,\Leftrightarrow x+7=38\Leftrightarrow x=31\\ d,\Leftrightarrow x+4=178\Leftrightarrow x=174\\ e,\Leftrightarrow2\left(x-51\right)=16+20=36\Leftrightarrow x-51=18\Leftrightarrow x=69\\ f,\Leftrightarrow x-19=9\Leftrightarrow x=28\\ g,\Leftrightarrow4\left(x-3\right)=49-1=48\Leftrightarrow x-3=12\Leftrightarrow x=15\)
a) 45 - ( x + 9 ) = 6
45 - x = 6 + 9
45 - x = 15
x = 45 - 15
x = 30
b) 89 - ( 73 - x ) = 20
89 - x = 20 + 73
89 - x = 93
x = 93 - 89
x = 4
c) 198 - ( x + 4 ) = 120
198 - x = 120 + 4
198 - x = 124
x = 198 - 124
x = 74
d) ( x + 7 ) - 25 = 13
x - 25 = 13 + 7
x - 25 = 20
x = 20 + 25
x = 45
e) 2 ( x - 51 ) = 2.23 + 20
2 ( x - 51 ) = 64 + 20
2 ( x - 51 ) = 84
x - 51 = 84 - 2
x - 51 = 82
x = 82 + 51
x = 133
f) 450 : ( x - 19 ) = 50
450 : x = 50 - 19
450 : x = 41
x = 450 : 41
x = 24
4(X – 3) = 72 – 110
\(\Leftrightarrow4\left(x-3\right)=49-1=48\Leftrightarrow x-3=12\Leftrightarrow x=15\)
\(4\left(x-3\right)=7^2-1^{10}\)
\(4\left(x-3\right)=49-1\)
\(4\left(x-3\right)=48\)
\(\left(x-3\right)=48:4\)
\(x-3=12\)
\(x=15\)
a) 3/13 + 7/12 - 10/13 + 5/12 | d) -5/10 + 12/28 - 3/27 - 7/18 + 20/35 |
b) 15/24 - 6/26 + 28/48 - 30/39 + 10/24 | e) 1/56 + 1/72 + 1/90 + 1/110 + 1/132+ 1/156 = |
c) -1/2 + 3/7 - 1/9 - 7/18 + 4/7 = |
72:20*28,6+14,3*0,2*64
2+2+4+6+10+...+110
Tìm x ∈ Z, biết:
a ) - 5 23 . 23 5 < x ≤ - 13 17 . - 34 13 b ) 5 . 1 4 - 1 5 - 1 10 ≤ x 20 ≤ - 3 . 1 2 - 1 4 - 1 5 c ) 3 5 - 4 5 . 60 < x < 3 7 5 6 - 2 + 7 2
tìm x biết 1/30 + 1/42+1/56+1/72+1/90+1/110+1/132 - x=2/3