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mestny [16]
4 years ago
15

16 - 2r = -3r + 6r + 1

Mathematics
1 answer:
Deffense [45]4 years ago
6 0

Answer: 1+5/7

Step-by-step explanation:

16-2r=3-r+6r+1

We move all terms to the left:

16-2r-(3-r+6r+1)=0

We add all the numbers together, and all the variables

-2r-(5r+4)+16=0

We get rid of parentheses

-2r-5r-4+16=0

We add all the numbers together, and all the variables

-7r+12=0

We move all terms containing r to the left, all other terms to the right

-7r=-12

r=-12/-7

r=1+5/7

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3 years ago
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Answer:

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Step-by-step explanation:

Let's solve your system by substitution.

−x−y=4;x+2y=4

Step: Solve−x−y=4for x:

−x−y=4

−x−y+y=4+y(Add y to both sides)

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(Divide both sides by -1)

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Step: Substitute−y−4forxinx+2y=4:

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y=8

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x=−y−4

x=−8−4

x=−12(Simplify both sides of the equation)

Answer:

x=−12 and y=8

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