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m_a_m_a [10]
4 years ago
7

When 40 is added to the number of miles Karen ran last week, the result is the same as adding 10 to 4 times the number of miles

she ran last week. How many miles did Karen run last week? 
Mathematics
1 answer:
noname [10]4 years ago
6 0
X+40=4x+10
4x-x=40-10
3x=30
x=10 miles

<em><u>Answer: 10 miles</u></em>
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