Các câu hỏi tương tự
Tìm x biết:
a, x÷7 = 17
b, 56÷x = 4
Tìm x biết:
a, (x + 72) × 4 = 320
b, (x - 56) × 7 = 749
c, (x + 3) × 4 = 36
d, (x - 5) × 6 = 72
Tìm x biết:
a, (x-23)×7 = 49
b, 25÷(x-56) = 5
Tìm x biết:
a, (x + 9)×9 = 81
b, (x + 24)÷9 = 7
c, x - 56 = 8×9
d, x + 25 = 9×10
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)f.58 – 58 x (6 + 54 – 60)g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Đọc tiếp
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)
b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)
c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)
d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)
e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)
f.58 – 58 x (6 + 54 – 60)
g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32
h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)
i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)
k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Tìm x biết: 56÷x = 7
A. x = 8
B. x = 7
C. x = 6
D. x = 9
a) 7 x 5 ..... 7 x 6 ..... 7 x 8 ..... 7 x 4 ..... 35 : 7 ..... 42 : 7 ..... 56 : 7 ..... 28 : 7 .....b) 42 : 7 ..... 35 : 7 ..... 63 : 7 ..... 16 : 2 ..... 14 : 7 ..... 49 : 7 ..... 7 : 7 ..... 48 : 6 ..... 28 : 7 ..... 70 : ..... 21 : 7 ..... 56 : 7 .....
Đọc tiếp
a) 7 x 5 = ..... 7 x 6 = ..... 7 x 8 = ..... 7 x 4 = .....
35 : 7 = ..... 42 : 7 = ..... 56 : 7 = ..... 28 : 7 = .....
b) 42 : 7 = ..... 35 : 7 = ..... 63 : 7 = ..... 16 : 2 = .....
14 : 7 = ..... 49 : 7 = ..... 7 : 7 = ..... 48 : 6 = .....
28 : 7 = ..... 70 : = ..... 21 : 7 = ..... 56 : 7 = .....
Bài 3. Tìm x. x/36 = 3/4 ; x/7 = 56/49 ; 15/27 = 5/x ; 3/7 = 42/x
Tìm x biết:
a, x÷6 = 74
b, x + 253 = 639
c, x - 29 = 56×3