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Mathematics 13 Online
OpenStudy (anonymous):

What is the value of z in the equation z + 7.8 = 16.4? A. 24.2 B. 8.6 C. 7.6 D. 9.6

OpenStudy (pandagurl):

what do you think it is?

OpenStudy (pandagurl):

It can't be A, because it's bigger than the answer

OpenStudy (pandagurl):

No, because 7.8+7.6=15.4

OpenStudy (anonymous):

so B

OpenStudy (pandagurl):

Yes! For questions like these, try adding all the likely answers and see which one works!

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