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OverLord2011 [107]
2 years ago
13

I added 3/4 + 1/5 and got 4/9 " does it make sense?

Mathematics
2 answers:
cupoosta [38]2 years ago
8 0

Answer:

No, it does not. The answer is 19/20

Step-by-step explanation:

3/4 + 1/5 = ?

3         1              15           4              19

----- + ----      =  --------   +  ------   =  ----------

4         5            20            20           20

1) Multiply the denominators by eachother and cross multiply the apposite numerator and denominator.  4 x 5 = 20. 3 x 5 = 15. 4 x 1 = 4

3) Add together

masya89 [10]2 years ago
4 0
<h3 /><h3>\frac{3}{4}  +  \frac{1}{5}  =  \frac{4}{9}  \\  \frac{3 \times 5}{4 \times 5}  +  \frac{1 \times 4}{5 \times 4}  =  \frac{4}{9}  \\  \frac{15 + 4}{20}  =  \frac{4}{9}  \\  \frac{19}{20} ≠ \frac{4}{9}</h3>

THIS SHOWS THAT YOUR ANSWER IS NOT CORRECT.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

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Step-by-step explanation:

Let

{1/(x+2y)} = u -----Eqn(1)

{1/(x-2y)} = v ------Eqn(2)

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On multiply equation (4) by 2, we get

⇛6u + 14v = -12 -----Eqn(5)

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6u + 5v = -3

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x + 2y = 3

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