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14 votes
Dee's solution is incorrect because her equation is incorrect. Write the correct equation she could use to find x

m x + 40 + 60 =180
x=80
m

User Tforgione
by
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1 Answer

5 votes
mx + 40 + 60 = 180
mx + 100 = 180
mx = 180-100

mx = 80

x = 80/m

if x = 80 then m = 1
User Adam Oren
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2.8k points