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givi [52]
3 years ago
11

Which is equivalent to 5/9-3/8+(-1/4)+1 4/9+1 5/8

Mathematics
1 answer:
AysviL [449]3 years ago
7 0

5/9-3/8+(-1/4)+1 4/9+1 5/8=3

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A unit rate must have a denominator of one:

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olga_2 [115]
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7 0
3 years ago
If DF = 9x-39, find EF.
otez555 [7]

DF=DE+EF\\\\DF=9x-39\\DE=47\\EF=3x+10\\\\\text{substitute}\\\\9x-39=47+3x+10\\9x-39=3x+57\ \ \ |-3x\\6x-39=57\ \ \ \ |+39\\6x=96\ \ \ \ |:6\\x=16\\\\\text{put the value of x to the expression}\ 3x+10\\\\EF=3(16)+10=48+10=58

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