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Ede4ka [16]
3 years ago
13

Combine the like terms to create an equivalent expression: r+(−5r)

Mathematics
1 answer:
nevsk [136]3 years ago
8 0

Answer:

-4r

Step-by-step explanation:

Since r and -5r both have the same variable, we can combine them

r-5r = -4r

r+(−5r) = -4r

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Step-by-step explanation:

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2 years ago
-12x + 18y = 21<br>(6x -9 = -9​
Leokris [45]

Answer:

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Step-by-step explanation:

Solve the following system:

{18 y - 12 x = 21

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In the second equation, look to solve for x:

{18 y - 12 x = 21

6 x - 9 = -9

Add 9 to both sides:

{18 y - 12 x = 21

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Divide both sides by 6:

{18 y - 12 x = 21

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Substitute x = 0 into the first equation:

{18 y = 21

x = 0

In the first equation, look to solve for y:

{18 y = 21

x = 0

Divide both sides by 18:

{y = 7/6

x = 0

Collect results in alphabetical order:

Answer: {x = 0 , y = 7/6

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Answer:

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2 years ago
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Answer:

1/6

Step-by-step explanation:

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