Which is the difference of 21 1/4 - 18 2/4? A:2 1/4. B:2 2/4. C:2 3/4. D:3 1/4.

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asked Mar 13, 2021 171k views

3 votes

Which is the difference of 21 1/4 - 18 2/4? A:2 1/4. B:2 2/4. C:2 3/4. D:3 1/4.

Mathematics
middle-school

HCL asked

by HCL

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2 Answers

3 votes

Answer:

Explanation:

Clement M answered Mar 15, 2021

by Clement M

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5 votes

Answer:

2 3/4 C

Explanation:

$(21+(1)/(4))-(18+(2)/(4))\\=21-18+(1)/(4) -(2)/(4) \\=3-(1)/(4) \\=(12-1)/(4) \\=(11)/(4) \\=2(3)/(4) \\or\\21(1)/(4) -18(2)/(4) \\=(85)/(4) -(74)/(4) \\=(85-74)/(4) \\=(11)/(4) \\=2(3)/(4)$

Alex Dzeiko answered Mar 17, 2021

by Alex Dzeiko

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