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lozanna [386]
3 years ago
5

I need to know this answer

Mathematics
2 answers:
andreev551 [17]3 years ago
6 0
R+15=4R-6
Collect like terms
Divide both sides by -3

R=7
Free_Kalibri [48]3 years ago
5 0

Answer:

r = 7

Step-by-step explanation:

Given

r + 15  = 4r - 6 ( subtract 4r from both sides )

- 3r + 15 = - 6 ( subtract 15 from both sides )

- 3r = - 21 ( divide both sides by - 3 )

r = 7

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So since we know what x is, we can substitute it into the original equation for x like so to solve for y...

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y = 18/7 (or about 2.57)

So now we know what x is, we can sub it into the below equation to solve for x...

x = 2(18/7) - 8
x = 36/14 - 8 (or about -5.43)


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