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Zepler [3.9K]
2 years ago
8

Find the least common denominator (LCD) of

Mathematics
2 answers:
Yanka [14]2 years ago
8 0

\large\underline{\sf{Solution-}}

\sf \: \frac{1}{6} and \frac{4}{9}  \\

\sf =  \frac{1}{6}  +  \frac{4}{9}  \\

\textsf{Take the LCM of 6 and 9 is 18 }\\

\sf \:  =  \frac{3 + 16}{18}  \\

=  \sf  \frac{19}{ 18}  \\

iVinArrow [24]2 years ago
5 0

Answer:

LCD(1/6, 4/9) = 18

In fraction form:

1/18

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2 years ago
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Paladinen [302]

Answer: B 5+5=10+4+4+4=12+3 10+12+3 25 lol

Step-by-step explanation:

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2 years ago
Answer the equation
ivanzaharov [21]

Answer:

x = -2, y = -4

coordinate: (-2, -4)

Step-by-step explanation:

Given system of equations:

a) 4x - 7y = 20

b) x - 3y = 10

1. Make x the subject in the <em>second</em> equation:

⇒ x - 3y = 10 [add 3y to both sides]

⇒ x - 3y + 3y = 10 + 3y

⇒ x = 3y + 10

2. Substitute the given value of x into <em>first</em> equation:

⇒ 4x - 7y = 20

⇒ 4(3y + 10) - 7y = 20 [distribute 4 through the parentheses]

⇒12y + 40 - 7y = 20 [combine like terms]

⇒ 5y + 40 = 20 [subtract 40 from both sides]

⇒ 5y - 40 - 40 = 20 - 40

⇒ 5y = -20 [divide both sides by 5]

⇒ 5y ÷ 5 = -20 ÷ 5

⇒ y = -4

3. Find the value of x by substituting the given value of y into x = 3y + 10:

⇒ x = 3y + 10

⇒ x = 3(-4) + 10 [multiply]

⇒ x = -12 + 10 [add]

⇒ x = -2

4. Check your work:

<em>a) 4x - 7y = 20</em>

⇒ 4(-2) - 7(-4) = 20

⇒ -8 + 28 = 20

⇒ 20 = 20 ✔

<em>b) x - 3y = 10</em>

⇒ -2 - 3(-4) = 10

⇒ -2 + 12 = 10

⇒ 10 = 10 ✔

This system of equations has a solution at (-2, -4).

Learn more here:

brainly.com/question/27849342

brainly.com/question/27728118

4 0
1 year ago
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Sergeu [11.5K]

Answer:

C

Step-by-step explanation:

8 0
2 years ago
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