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12,12 x 7,5 + 12,12 : 2 + 12,12 + 12,12
= 12,12 x 7,5 + 12,12 x 0,5 + 12,12 x 1 + 12,12 x 1
= 12,12 x (7,5 + 0,5 + 1 + 1)
= 12,12 x 10
= 121,2
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\(12,1+12,1\cdot101+99\cdot12,1-101\cdot12,1\)
\(=12,1\cdot\left(1+101+99-101\right)\)
\(=12,1\cdot\left(1+99\right)\)
\(=12,1\cdot100\)
\(=1210\)
`12,1 + 12,1 x 101 + 99 x 12,1 - 101 x 12,1`
`= 1 x 12,1 + 12,1 x 101 + 99 x 12,1 - 101 x 12,1`
`= 12,1 x (1 + 101 + 99 - 101)`
`= 12,1 x 100`
`= 1 210`
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`11/12 + 11/276 + 11/782 + ..... + 11/8900 `
`= 11/(1.12) + 11/(12.23) + ....+ 11/(89.100)`
`= 1/1 - 1/12 + 1/12 - 1/23 + ..... + 1/89 - 1/100`
`= 1 - 1/100 `
`= 99/100`
m là Ánh - con đũy bthân tao?(nếu k phải thì cho mình xin lỗi ạ)
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\(=0,18\left(0,2\cdot950+1\right)+3\left(242\cdot2+3\right)=1495,38\)
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\(=0,18\left(0,2\cdot950+1\right)+3\left(242\cdot2+3\right)=1495,38\)
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\(\dfrac{6,18:0,25\times3,5\times4:0,125\times5:0,1}{3,09:0,2\times8\times7:50\%\times8\times10}\)
\(=\dfrac{6,18\times4\times3,5\times4\times8\times5\times10}{3,09\times5\times8\times7\times2\times8\times10}\)
\(=\dfrac{6.18}{3.09}\times\dfrac{4\times4\times3,5}{7\times2\times8}=2\times\dfrac{1}{2}=1\)