7 x X = 4942 X: 5 = 1308
X = 4942 : 7 X = 1308 x 5
X = 706 X = 6540
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Tìm x:
a) X x 4 = 1608
b) 7 x X = 4942
Tìm x
a) x : 5 = 1308
b) x : 6 = 1507
Tìm xa) X + 15 20 b) X – 18 16 c) 72 – x 50
................ ................... .................. ................ ................... .................. ................ ................... ..................d) X x 7 42 e) X : 7 5 f) 49 : x 7 ................ ................... .................. ................ ................... .....
Đọc tiếp
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 biết:
a, (x + 15)÷8 = 7
b, (x - 23)÷8 = 12
c, 24 = (x + 5)÷5
d, (x - 8)÷7 = 11
Tìm x:
(1+x)+(3+x)+(5+x)+(7+x)+(9+x)=10*5
Bài 3. Tìm x. x/36 = 3/4 ; x/7 = 56/49 ; 15/27 = 5/x ; 3/7 = 42/x
Tìm xa) 12 : x 3 b) 21 : x 7 c) 30 : x 3................ ................... .................................. ................... .................................. ................... ..................d) X : 7 4 e) 20 : x 5 f) X x 6 42................ ................... .................................. ................... .................................. ........
Đọc tiếp
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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Tìm x
x : 5 = 3 x 7
tìm X
X+X+X+X+X =100
X+X+X+X *5 = 200
(X+1) + (X+4) +(X+7) + (X+10) =62