3 years ago

Solve for c solve for r

Mathematics

1 answer:

expeople1 [14]3 years ago

7 0

Answer:

Step-by-step explanation:

9(c+7)=27

9c+63=27 subtract 63 from both sides

9c= -36 divide by 9

c= -4

3(2r-8)+4r=76 foil

6r-24+4r=76 combine like terms

10r-24=76 add 24 to both sides

10r+100 divide by 10

r= 10

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Subtract the $x^2$ terms from each other, then the $x$ terms, then the ones without any $x$ whatsoever.

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First, we'll subtract $9x^2$ from $12x^2$

$12x^2-9x^2- = 3x^2$

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Next, we'll subtract $22x$ from $-8x$

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Finally, we'll subtract $-46$ from $12$

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Solve for c solve for r​

Solve for c solve for r