a)
\(x+4=78< =>x=74\)
b)
\(< =>2\left(x-51\right)=28< =>x-51=14< =>x=65\)
c)
\(< =>x-19=9< =>x=28\)
d)
\(< =>4\left(x-3\right)=48< =>x-3=12< =>x=15\)
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) 58 + 7x = 100
b) 4(x- 51) = 2.22 + 20
c) 2x – 49 = 5.32
Tìm x, biết:
a) 198 - ( x + 4 ) = 120
b) 2(x-51) = 2.23 + 20
c) 450 : ( x - 19 ) = 50
d)4(x-3) = 72 - 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
Bài 3. Tìm số tự nhiên x, biết:
a) 150 – x = - 9 b) 4(x – 3) = 48 c) 71 – (33 + x) = 26 d) 2(x – 51) = 2.23 + 20 e) 450 : (x – 19) = 50 f) 135 – 5(x + 4) = 35 g) (15 – 6x). 35 = 36 | h) 32(x + 4) – 52 = 5.22 i) 4 – ( 7 – x) = 2x – ( 13 – 4) k) ( 7 – x) – ( 25 + 7 ) = - 25 l) 7x – x = 521 : 519 + 3.22 – 70 m) 2x+1 – 2 = 14 o) 4x + 4x+1 = 320 p) ( 2x +1)3 = 125 q) (x - 2)2 = ( x – 2)5 |
198 - ( x + 4 ) = 120
2 x ( x - 51 ) = 2 x 2^3 + 20
200 - ( 2 x + 6 ) = 4^3
[ ( 6x - 72 ) : 2 - 84 ] . 4 = 8.3
720 : [ 41 - ( 2x -5 ) ] = 3^3 . 8
x + ( x+1) + ...+ ( x+10) = 110
4(X – 3) = 72 – 110
rút gọn:
a, 15 x 3^11 + 4 x 2^74/ 9^7
b,2^19 x 4^16 x 3^50/ 6^51
Lạy chúa mn giúp mình làm bài này từng ngày nha nhưng đừng T5
a) 71 – (33 + x) = 26 b) (x + 73) – 26 = 76 c) 45 – (x + 9) = 6 d) 89 – (73 – x) = 20 e) (x + 7) – 25 = 13 f) 198 – (x + 4) = 120 g) 2(x- 51) = 2.23 + 20 h) 450 : (x – 19) = 50 i) 4(x – 3) = 72 – 110 | j) 140 : (x – 8) = 7 k) 4(x + 41) = 400 l) 11(x – 9) = 77 m) 5(x – 9) = 350 n) 2x – 49 = 5.32 o) 200 – (2x + 6) = 43 p) 135 – 5(x + 4) = 35 q) 25 + 3(x – 8) = 106 r) 32(x + 4) – 52 = 5.22 |
