3 years ago

What is the solution to this system of linear equations: y-x=4 and y+2x=1

1 answer:

5 0

-x + y = 4
2x + y = 1
 -3x = 3
 -3 -3
 x = -1
 -x + y = 4
-(-1) + y = 4
 1 + y = 4
 - 1 - 1
 y = 3
(x, y) = (-1, 3)

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What is one third the difference between 3/4 and 2/3?

Ivan

Answer:

One third the difference between 3/4 and 2/3 is $(\frac{1}{36} )$

Step-by-step explanation:

One third the difference of A and B = $\frac{1}{3} \times (A-B)$

Here, as given in the question:

$A = \frac{3}{4} , B = \frac{2}{3} \\\implies A - B = \frac{3}{4} - \frac{2}{3}\\=(\frac{3 \times 3 -2 \times 4}{12}) = (\frac{9-8}{12} ) = (\frac{1}{12})\\ \implies A - B = (\frac{1}{12})$

Now, one third of the difference is :

$(\frac{1}{3}) \times (\frac{1}{12}) = (\frac{1}{36})$

Hence, one third the difference between 3/4 and 2/3 is $(\frac{1}{36} )$

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What’s 18x3+12-1x34+13-2x56?

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18 x 3 + 12 - 1 x 34 + 13 - 2 x 56 = 67

<=Work=>

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2 x 56 = 112

(54) + 12 - (34) + 13 - (112)

66 - 34 + 13 - 112

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