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lara31 [8.8K]
3 years ago
14

Solve using multiplication and check

Mathematics
1 answer:
OLga [1]3 years ago
4 0
Cross multiply to solve
(-3r)(4)=(-27)(2)

Multiply on both sides
-12r=-54

Divide both sides by -12
r=4.5

Final answer: r=4.5

Check:
-3(4.5)= -13.5
-13.5/2= -6.75

-27/4=-6.75

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Answer:

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Step-by-step explanation:

If you already have the elevation of the bottom floor, you need to figure out how to get the top floor's elevation by taking 124 and 36 and adding them together. You will get 160. Then, take 160 and plug it in for x, leaving you with x-36=124 or 160-36=124. Hope this helps.

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LCM of 2,3=6

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2/6=2/6×10/10=20/60

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Step-by-step explanation:

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