Bài 3: Tìm x a. x x 24 = 3027 + 2589
b. 42 x x = 24024 - 8274
c. x : 54 = 246 x 185
d. 134260 : x = 13230 : 54
Bài 4*: Tìm x
a. ( x + 268) x 137 = 48498
b. ( x + 3217) : 215 = 348 c. ( x - 2048) : 145 = 246
d. (2043 - x) x 84 = 132552
Bài 6*: Tìm x
a. x x 124 + 5276 = 48304
b. x x 45 - 3209 = 13036
c. x : 125 x 64 = 4608
d. x : 48 : 25 = 374
e. 12925 : x + 3247 = 3522
f. 17658 : x - 178 = 149
g. 15892 : x x 96 = 5568
h. 117504 : x : 72 = 48
Bài 7*: Tìm x a. 75 x ( x + 157) = 24450
b. 14700 : ( x + 47) = 84
69 x ( x - 157) = 18837
41846 : ( x - 384) = 98
c. 7649 + x x 54 = 33137
d. 35320 - x x 72 = 13072
4057 + ( x : 38) = 20395
21683 - ( x : 47) = 4857
Bài 8*: Tìm x
a. 327 x (126 + x) = 67035
10208 : (108 + x) = 58
b. 68 x (236 - x) = 9860
17856 : (405 - x) = 48
c. 4768 + 85 x x = 25763
43575 - 75 x x = 4275
d. 3257 + 25286 : x = 3304
3132 - 19832 : x = 3058
Bài 9*: Tìm x
x x 62 + x x 48 = 4200
x x 186 - x x 86 = 3400
x x 623 - x x 123 = 1000 x x
75 + 57 x x = 32604 125
x x - x x 47 = 25350
216 : x + 34 : x = 10
2125 : x - 125 : x = 100
dấu . là nhân nhé!
Bài 3:
\(x . 24 = 3027 + 2589\)
\(x . 24 =5616\)
\(x =5616:24\)
\(x= 234\)
\(------------\)
\(42. x = 24024 - 8274\)
\(42. x = 15750\)
\(x = 15750:42\)
\(x = 375\)
\(--------------\)
\( x : 54 = 246 . 185\)
\( x : 54 = 45510\)
\( x = 45510.54\)
\(x= 2457540\)
\(-------------------\)
\( 134260 : x = 13230 : 54\)
\( 134260 : x = 245\)
\(x = 134260 : 245\)
\(x= 548 \)
\(-------------------\)
Bài 4
\( ( x + 268) . 137 = 48498\)
\( x + 268= 48498:137\)
\( x + 268= 354\)
\( x= 354-268\)
\(x= 86\)
\(------------------\)
\( ( x + 3217) : 215 = 348\)
\( x + 3217 = 348.215\)
\( x + 3217 = 74820\)
\( x = 74820-3217\)
\( x = 71603\)
\(-------------------\)
\( ( x - 2048) : 145 = 246\)
\( x - 2048= 246.145\)
\( x - 2048= 35670\)
\( x = 35670+ 2048\)
\(x= 37718 \)
\(------------------------\)
\( (2043 - x) . 84 = 132552\)
\( 2043 - x = 132552:84\)
\(2043 - x = 1578 \)
\( x = 2043 -1578\)
\(x= 465 \)
bài 6
\( x .124 + 5276 = 48304\)
\( x .124 = 48304- 5276 \)
\( x .124 = 43028\)
\( x = 43028:124\)
\(x= 347 \)
\(-----------------\)
\( x.45 - 3209 = 13036\)
\( x.45 = 13036+ 3209\)
\( x.45 = 16245\)
\(x=16245:45\)
\(x= 361\)
\(---------------------\)
\(x : 125 . 64 = 4608\)
\(x : 125 = 4608:64\)
\(x : 125 = 72 \)
\(x = 72.125\)
\(x = 9000\)
\(----------------\)
\(x : 48 : 25 = 374\)
\(x : 48 = 374.25\)
\(x : 48 = 9350\)
\(x=9350.48\)
\(x= 448800\)
\(------------------\)
\( 12925 : x + 3247 = 3522\)
\( 12925 : x = 3522- 3247\)
\( 12925 : x = 275\)
\(x = 12925 : 275\)
\(x = 47\)
\(------------------\)
\(17658 : x - 178 = 149\)
\(17658 : x = 149+ 178\)
\(17658 : x = 327\)
\(x = 17658 : 327\)
\(x= 54\)
\(------------------------\)
\( 15892 : x . 96 = 5568\)
\( 15892 : x= 5568:96\)
\( 15892 : x= 58 \)
\( x= 15892 :58\)
\(x= 274\)
\(----------------\)
\(117504 : x : 72 = 48\)
\(117504 : x = 48.72\)
\(117504 : x = 3456\)
\(x = 117504 : 3456\)
\(x= 34\)
