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shepuryov [24]
2 years ago
6

2/5 + 1/4 + 7/10 = what's the answer ​

Mathematics
1 answer:
kotegsom [21]2 years ago
4 0

Convert 2/5, 1/4 and 7/10 to fractions with like denominators.

\bf{\dfrac{2\times4}{5\times4}+\dfrac{1\times5}{4\times5}+\dfrac{7\times2}{10\times2} \ \ \to \ \ \ Multiply }

\bf{\dfrac{8}{20}+\dfrac{5}{20}+\dfrac{14}{20}    }

Since 8/20,5/20 and 14/20 have the same denominator, add their numerators to add them up.

\bf{\dfrac{8+5+14}{20} \ \ \to \ \ \ Add. }

\green{\underbrace{\red{\boxed{\purple{\boxed{\bf{\blue{\frac{27}{20}  }}}}}} \ \ \to \ \ \bf{\red{Answer}}}}

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2 years ago
Find the solution of the system of equations.<br> 15x – 4y = -50<br> 3x – 2y = –16
rusak2 [61]

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x=-2, y=5. (-2, 5).

Step-by-step explanation:

15x-4y=-50

3x-2y=-16

---------------

15x-4y=-50

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------------------------

15x-4y=-50

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-------------------

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7 0
2 years ago
Solve the given system of equations.<br> - 3a = 36<br> 10a + 3c = 9<br> 2b + 50 = 23
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Answer:

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Step-by-step explanation:

(a,b,c) = ( -12, -27/2,43)

Hope it helps:)

5 0
3 years ago
Need help, please <br><br>asap
igomit [66]

Answer:

I'm pretty sure it's C

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