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3 years ago

X-y=4. work out the value of 3(x-y)

Mathematics

2 answers:

ddd [48]3 years ago

7 0

Answer:

$12$

Step-by-step explanation:

$(x - y) = 4 \\ 3(x - y) = 3 \times (x - y) \\ 3 \times (x - y) \\ 3 \times 4 \\ = 12$

hope this helps you.

Basile [38]3 years ago

5 0

<h2>Answer:</h2><h2>12</h2>

 $solution \\ x - y = 4 \\ now \\ 3(x - y) \\ = 3 \times 4 \\ = 12$ 

hope this helps...

Good luck on your assignment...

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Answer:

1¹/₈ hours

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To find out how much time Rileigh spent, multiply the fractions but first convert the improper fraction to a proper fraction:

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Step-by-step explanation:

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VMariaS [17]

Answer:

$x=-1$ or $7$

Step-by-step explanation:

We use casework on when $3x-9=12$ and when $3x-9=-12$ .

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2 years ago

How do you write the fraction of 6/6 as a sum of fractions in three different ways

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Answer:

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Step-by-step explanation:

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3 years ago

Find the solution of this system of equations 4x - 5y = -12 -X + 5y = 18

Natalka [10]

4x - 5y = -12

-x + 5y = 18

Add the equations together:

4x + -x = 3x

-5y + 5y = 0

-12 + 18 = 6

So now you have:

3x = 6

Divide both sides by 3:

X = 2

Now you have the value of x, replace x with 2 in one of the equations and solve for y:

4(2) -5y = -12

8 -5y = -12

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Divide both sides by -5:

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