Tìm x:
a) x + 23 = 57
=> x = 57 - 23
=> x = 34
Vậy x = 34
b) 64 + x = 320
=> x = 320 - 64
=> x = 256
Vậy x = 256

b) 64 + x = 320
x = 320 - 64
x = 256

a) x + 23 = 57
=> x = 57 - 23
=> x = 34
b) 64 + x = 320
=> x = 320 - 64
=> x = 256
c) 24 : x = 48
=> x = 24 : 48
=> x = 0,5
d) x : 7 = 47
=> x = 47.7
=> x = 329
e) 32.(x + 8) = 320
=> x + 8 = 320 : 32
=> x + 8 = 10
=> x = 10 - 8
=> x = 2

c) 24 : x = 48
x = 48 : 24
x = 2

d) x : 7 = 47
x = 47 x 7
x = 329

e) 32.(x + 8) = 320
32.x + 32.8 = 320
32.x + 256 = 320
32.x = 320 - 256
32.x = 64
x = 64 : 32
x = 2

c) 24 : x = 48
=> x = 24 : 48
=> x = 24/48
=> x = 1/5
Vậy x = 1/5
d) x : 7 = 47
=> x = 47 .7
=> x = 329
Vậy x = 329
e) 32.(x + 8) = 320
=> 32x + 256 = 320
=> 3x = 320 - 256
=> 3x = 64
=> x = 64/3
Vậy x = 64/3

a) x + 23 = 57
x = 57 - 23
x = 34
b) 64 + x = 320
x = 320 - 64
x = 256
c) 24 : x = 48
x = 48 : 24
x = 2
d) x : 7 = 47
x = 47 x 7
x = 329
e) 32.(x + 8) = 320
32.x + 32.8 = 320
32.x + 256 = 320
32.x = 320 - 256
32.x = 64
x = 64 : 32
x = 2

e) 32.(x + 8) = 320
=> 32x + 256 = 320
=> 32x = 320 - 256
=> 32x = 64
=> x = 64/32
=> x = 2
Vậy x = 2
(Phần trên làm nhầm ==)

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