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tatyana61 [14]
3 years ago
6

What Is The Least Common Denominator For The Fractions 5/12 And 7/18

Mathematics
2 answers:
weeeeeb [17]3 years ago
4 0
A. 36, the reason being is because 18x 2 is 36 and 12 x 3 is 36
omeli [17]3 years ago
3 0
The least common denominator.

Take out the 12 and 18.

2 /  12    18         
2 /   6      9
3 /   3      9
3 /    1     3
   /    1     1

Least common denominator = 2 * 2 * 3 * 3 = 36

A) is the answer.

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5w = 23 - 3f and 4f = 12 - 2w
Kryger [21]

Answer:

f = 1, w = 4

Step-by-step explanation:

Given the 2 equations

5w = 23 - 3f → (1)

4f = 12 - 2w (add 2w to both sides )

2w + 4f = 12 ( subtract 4f from both sides )

2w = 12 - 4f → (2)

Multiplying (1) by 4 and (2) by - 3 and adding the result will eliminate f

20w = 92 - 12f → (3)

- 6w = - 36 + 12f → (4)

Add (3) and (4) term by term to eliminate f

14w = 56 ( divide both sides by 14 )

w = 4

Substitute w = 4 into either of the 2 equations and solve for f

Substituting into (1)

5(4) = 23 - 3f

20 = 23 - 3f ( subtract 23 from both sides )

- 3 = 3f ( divide both sides by - 3 )

1 = f

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3 years ago
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Step-by-step explanation:

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Find the value of x.<br> 48°<br> (7x + 13)
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Step-by-step explanation:

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Solve the equation <br><br> 3x-1/2y=2
poizon [28]

Answer:

Step-by-step explanation:

Without a second equation relating x and y, we can solve 3x - 1/2y = 2 ONLY for x in terms of y or for y in terms of x:

x in terms of y:    Multiply all three terms of 3x - 1/2y = 2 by 2, to eliminate the fraction:  6x - y = 4.  Now add y to both sides to isolate 6x:  6x = 4 + y.

Last, divide both sides by 6 to isolate x:

x = (4 + y)/6

y in terms of x:    

y = 6x - 4

If you want a numerical solution, please provide another equation in x and y and solve the resulting system.

4 0
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