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x . (3.4+6.6) = 320
x . 10 = 320
x = 320 : 10 = 32
k mk nha
Ta có:x.3,4+x.6,6=320
x.(3,4+6,6)=320
x.10 =320
x =320:10=32
Vậy x=32
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X x 2,4 + X x 6,6 + X = 320
X x 2,4 + X x 6,6 + X x 1 = 320
X x (2,4+6,6+1) = 320
X x 10 = 320
X = 320 : 10
X = 32
Xx2,4+Xx6,6+X=320
Xx2,4+Xx6,6+Xx1=320
Xx(2,4+6,6+1)=320
Xx10=320
X=320:10
X=32
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(x+15)+(x-3)+(x-4)=320
x+15+x-3+x-4=320
3x+15-3-4=320
3x+15-3=320+4
3x+15-3=324
3x+15=324+3
3x+15=327
3x=327-15
3x=312
x=312/3
x=104
đáp án:?????
K nha!Kết bạn nha!bài này hỏi người khác cho dễ
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10 % của 320 là 32
5% của 320 là 16
2,5% của 320 là 8
Vậy 17,5 của 320 là : 56
T i ck mk vs
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
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120 x 64 + 320 - 25 x 4 x 16 = 120 x 4 x 16 + 20 x 16 - 100 x 16
= 480 x 16 + 20 x 16 - 100 x 16
= 16 x (480 + 20 - 100)
= 16 x 400
= 6400
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(81.6 x 27.3 - 17.3 x 81.16) x (32 x 11 - 3200 x 0.1 - 32)
= 823.612 x 0
= 0
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\(320-\left(120,5+95,25+5,25\right)+874:12.12,5\)
\(=320-\left(\frac{241}{2}+\frac{381}{4}+\frac{21}{4}\right)+874:12.\frac{25}{2}\)
\(=320-\left(\frac{241}{2}+\frac{201}{2}\right)+\frac{437}{6}.\frac{25}{2}\)
\(=320-221+\frac{10925}{12}\)
\(=99+\frac{10925}{12}=\frac{12113}{12}\)
Chú thích: Dấu nhân thay bằng dấu .