Tìm x ∈ N sao cho
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Bài 5. Tìm xe N sao cho:
a) (x-1) = 1
b) 72x-6 = 49
c) (2x –16)
=128
=
=
e) 105-(135-7x):9=97
f) 275–(113+x)+63=158
d) 565-13.x=370
h) x(x-1)=0
i) (x+2)(x-4)=0
g) [3.(x+2):7].4 = 120
m) 3*-3-32 = 2.32
=
1) x'.x = 2°: 2'
k) (x² – 43):7= 3° – 2'.3
Rài 6.Tìmx ENsao cho:
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Bài 5. Tìm xe N sao cho:
a) (x-1) = 1
b) 72x-6 = 49
c) (2x –16)
=128
=
=
e) 105-(135-7x):9=97
f) 275–(113+x)+63=158
d) 565-13.x=370
h) x(x-1)=0
i) (x+2)(x-4)=0
g) [3.(x+2):7].4 = 120
m) 3*-3-32 = 2.32
=
1) x'.x = 2°: 2'
k) (x² – 43):7= 3° – 2'.3
Rài 6.Tìmx ENsao cho: