Calcule o valor das expressões:
A) [(- 3/8 + 4/16 +3) . 1/2 ] =
B) [( -3/4 . 16/81 + 0,3)] . (-3/4) =
Soluções para a tarefa
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8
A)
![[(\frac{-3}{8}+\frac{4}{16}+3)*\frac{1}{2}]=\\\\=[(\frac{-3}{8}+\frac{1}{4}+3)*\frac{1}{2}]=\\\\=[(\frac{-3+2+24}{8})*\frac{1}{2}]=\\\\=[\frac{23}{8}*\frac{1}{2}]=\\\\=\frac{23}{16}](https://tex.z-dn.net/?f=%5B%28%5Cfrac%7B-3%7D%7B8%7D%2B%5Cfrac%7B4%7D%7B16%7D%2B3%29%2A%5Cfrac%7B1%7D%7B2%7D%5D%3D%5C%5C%5C%5C%3D%5B%28%5Cfrac%7B-3%7D%7B8%7D%2B%5Cfrac%7B1%7D%7B4%7D%2B3%29%2A%5Cfrac%7B1%7D%7B2%7D%5D%3D%5C%5C%5C%5C%3D%5B%28%5Cfrac%7B-3%2B2%2B24%7D%7B8%7D%29%2A%5Cfrac%7B1%7D%7B2%7D%5D%3D%5C%5C%5C%5C%3D%5B%5Cfrac%7B23%7D%7B8%7D%2A%5Cfrac%7B1%7D%7B2%7D%5D%3D%5C%5C%5C%5C%3D%5Cfrac%7B23%7D%7B16%7D "[(\frac{-3}{8}+\frac{4}{16}+3)*\frac{1}{2}]=\\\\=[(\frac{-3}{8}+\frac{1}{4}+3)*\frac{1}{2}]=\\\\=[(\frac{-3+2+24}{8})*\frac{1}{2}]=\\\\=[\frac{23}{8}*\frac{1}{2}]=\\\\=\frac{23}{16}")
B)
![[(\frac{-3}{4}*\frac{16}{81}+0,3)]*(\frac{-3}{4})=\\\\=[(\frac{-48}{324}+\frac{3}{10})]*(\frac{-3}{4})=\\\\=[\frac{-4}{27}+\frac{3}{10}]*(\frac{-3}{4})=\\\\=[\frac{-40+81}{270}]*(\frac{-3}{4})=\\\\=[\frac{41}{270}]*(\frac{-3}{4})=\\\\=\frac{-123}{1080}=\\\\=\frac{-41}{360}](https://tex.z-dn.net/?f=%5B%28%5Cfrac%7B-3%7D%7B4%7D%2A%5Cfrac%7B16%7D%7B81%7D%2B0%2C3%29%5D%2A%28%5Cfrac%7B-3%7D%7B4%7D%29%3D%5C%5C%5C%5C%3D%5B%28%5Cfrac%7B-48%7D%7B324%7D%2B%5Cfrac%7B3%7D%7B10%7D%29%5D%2A%28%5Cfrac%7B-3%7D%7B4%7D%29%3D%5C%5C%5C%5C%3D%5B%5Cfrac%7B-4%7D%7B27%7D%2B%5Cfrac%7B3%7D%7B10%7D%5D%2A%28%5Cfrac%7B-3%7D%7B4%7D%29%3D%5C%5C%5C%5C%3D%5B%5Cfrac%7B-40%2B81%7D%7B270%7D%5D%2A%28%5Cfrac%7B-3%7D%7B4%7D%29%3D%5C%5C%5C%5C%3D%5B%5Cfrac%7B41%7D%7B270%7D%5D%2A%28%5Cfrac%7B-3%7D%7B4%7D%29%3D%5C%5C%5C%5C%3D%5Cfrac%7B-123%7D%7B1080%7D%3D%5C%5C%5C%5C%3D%5Cfrac%7B-41%7D%7B360%7D "[(\frac{-3}{4}*\frac{16}{81}+0,3)]*(\frac{-3}{4})=\\\\=[(\frac{-48}{324}+\frac{3}{10})]*(\frac{-3}{4})=\\\\=[\frac{-4}{27}+\frac{3}{10}]*(\frac{-3}{4})=\\\\=[\frac{-40+81}{270}]*(\frac{-3}{4})=\\\\=[\frac{41}{270}]*(\frac{-3}{4})=\\\\=\frac{-123}{1080}=\\\\=\frac{-41}{360}")
B)
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Resposta:
tbm n sei
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