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\(x+15,17=9,15\cdot2,38\)
\(x+15,17=21,777\)
\(x=21,777-15,17=>x=6,607\)
\(b,10,89:x=10,89-7,765\)
\(10,89:x=3,125\)
\(x=10,89:3,125=>x=3,4848\)
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Mình làm nhầm ,xin lỗi bạn , mình làm lại nè :
475,3 x 1,75 + 475,3 x 9,15 - 475,3 x 10,89
= 475 , 3 x ( 1, 75 +9, 15 - 10,89 )
= 475, 3 x 0,01
=4,753
475,3 x 1,75 + 475,3 x 9,15 - 475,3 x 10,89
= 457 ,3 x ( 1, 75 + 9,15 - 10, 89 )
= 457 , 3 x 0,01
= 1, 573
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2. Diện tích hình tam giác có độ dài cạnh đáy 12 cm , chiều cao 8cm là:
12x8x1/2=48(cm2)
4. Tìm x biết : 10,89 ÷ x = 10,89 - 7,765. Vậy x là:
Ta có:10,89 : x = 10,89 - 7,765.
10,89 : x=3,125
x=10,89:3,125
x=3,4848
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A)2013x3,64+7,26x2013–2013x10,89
=2013x(3,64+7,26–10,89)
=2013x0,01
=20,13
B) \(3\frac{1}{4}\) giờ —1 giờ 15 phút
=\(3\frac{1}{4}\)giờ —\(1\frac{1}{4}\)giờ
= 2 giờ
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\(352,4\times2,45+352,4\times8,45-352,4\times10,89\)
\(=352,4\times\left(2,45+8,45-10,89\right)\)
\(=352,4\times0,01\)
\(=3,524\)
\(=352.4\left(-2.45+8.45-10.89\right)=352.4\cdot\left(-4.89\right)=-1723,236\)
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12 , 02 × y = 84 , 14 → y = 7 y + 34 , 58 = 139 , 4 → y = 104 , 82 52 , 01 − y = 10 , 89 → y = 41 , 12 y : 9 = 6 , 56 → y = 59 , 04
x+15,77=21,777
x = 21,777-15,77
x = 6,007
10,89:x=3,125
x=10,89:3,125
x=3,4848
Ủng hộ nha các bạn
\(x+15,77=9,15\times2,38\)
\(x+15,77=21,777\)
\(x=21,777-15,77\)
\(x=6,007\)
\(10,89\div x=10,89-7,765\)
\(10,89\div x=3,125\)
\(x=10,89\div3,125\)
\(x=3,4848\)