(M2) x x 7 = 2107. Giá trị của x bằng:
A. 31
B. 301
C. 14749
D. 2100
1) Tinh 2469/2 6487/3 4159/5
2) Dat tinh roi tinh
3224/4 2819/7
1516/3 1865/6
3)tim x
x*7=2107 8*x=1640 x*9=2763
Xx7=2107 x=? A.301 B.201 C.101.|
8xX=1640 x=? A.205 B.105 C.005. |
Xx9=2763 x=? A.307 B.207 C.107 |
Tìm X.
a) X x 7 = 49 b) X : 7 = 6
Tìm x
a) X + 15 = 20 b) X – 18 = 16 c) 72 – x = 50
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d) X x 7 = 42 e) X : 7 = 5 f) 49 : x = 7
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Tìm x:
x :7= 100 + 8
x ´ 7 = 357
Tìm x
a) 12 : x = 3 b) 21 : x = 7 c) 30 : x = 3
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d) X : 7 = 4 e) 20 : x = 5 f) X x 6 = 42
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Bài 3. Tìm x. x/36 = 3/4 ; x/7 = 56/49 ; 15/27 = 5/x ; 3/7 = 42/x
Tìm x:
7 x x = 4942 x : 5 = 1308