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lana [24]
2 years ago
10

Find the common denominator needed to subtract the following fractions. 5/6 -2/7 =

Mathematics
1 answer:
quester [9]2 years ago
8 0

Answer:

42

Step-by-step explanation:

We need to find the Least Common Multiple (that isn't 0) between 6 and 7. To do this, list each number's multiples.

Multiples of 6: 0, 6, 12, 18, 24, 30, 36, 42, 48, 54

Multiples of 7: 0, 7, 14, 21, 28, 35, 42, 49, 56, 63

Their LCM is 42. Now, we multiply the fractions so the denominators are both 42. !You have to multiply <u>both</u> the numerator and denominator by the same number! For 6, 6*7 is 42, so you multiply both 6 and 5 by 7. When you do this, you get 35/42. For 7, 7*6 is 42, so you have to multiply both 7 and 2 by 6. When you do this, you get 12/42. The new problem is 35/42-12/42.

Hope this helps!

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If y = - 4/5x - 2, what is the value of x when y = - 9
MrRa [10]
Y = -4/5 x - 2
-9 = -4/5 x - 2
-4/5 x = -9 + 2 = -7
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x = -35/-4 = 35/4
3 0
3 years ago
Given f(x)=3x-2 and g(x)=5x, what is f(x)•g(x)
Natasha2012 [34]
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6 0
3 years ago
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yaroslaw [1]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
How does solving the equation arithmetically compare to solving an equation algebraically
IRISSAK [1]
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4 0
3 years ago
Find angle B and angle E
Natali [406]

Answer:

x = 9, Angles are 54°

Step-by-step explanation:

First, we need to find x:

7x-9 = 5x+9

+9 +9

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x = 9

Now, we plug our x value in to find our angles.

5(9) + 9 = 54

Angle B = 54°

7(9) - 9 = 54°

Angle E = 54°

(angles are the same due to AAA property)

6 0
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