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Bài 1 :
a) = 98765
b) = 300657
c) 610000
Bài 2:
a) X + 77 = 1800
X = 1800 - 77
X = 1723
b) 8950 : x = 5
x = 8950 : 5
x = 1790
c) x = 8765 : 5
x = 1753
a,98765 b,300657 c,610000 Bài 2 : a, 17923 b, 1790 c, 1753
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tìm x:
a
x - 10 + 5 = 100
x - 10 =100-5=95
x=95+10=105
b
x + 10 - 5 = 100
x + 10 = 100 + 5 = 105
x = 105 - 10 = 95
tích mik ủng hộ nha bà con cô bác ơi
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a) 126 x 4 + 126 x 5 + 126
= 126 x 4 + 126 x 5 + 126 x 1
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
b) 184 x 100 - 50 x 100
= ( 184 - 50 ) x 100
= 134 x 100
= 13400
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5 x 1 = 5
5 x 2 = 10
8 x 8 = 64
100 x 100 = 1000
57 : 3 = 19
12 : 6 = 2
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756 = 700 + 50 + 6 hoặc 7 x 100 + 5 x 10 + 6 x 1
862 = 8 x 100 + 6 x 10 + 2
HT
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x+30x2=100x5
x+30x2=500
x+60=500
x=500-60
x=440
ai k mik mk k lại
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x = 3000 + 700 + 60 + 5
x= 3700 + 60 + 5
x = 3760 + 5
x = 3765
x =3 X 1000 + 7 X 100 + 6 X 10 + 5
x=3000 + 700+60+ 5
x=3765
x = 100 - 5
x = 95
x=100-5
x=95