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-BARSIC- [3]
3 years ago
13

What is 9x-15+7x-7 in 2 numbers topic is Equivalent expressions

Mathematics
1 answer:
Sladkaya [172]3 years ago
5 0
Combine “like” terms

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5 0
3 years ago
K= 35.50x + 42<br> k=991x + 27
SSSSS [86.1K]

Answer:

k=42.5573 and x=0.015699

Step-by-step explanation:

Step: Solve k=35.5x+42for k:

k=35.5x+42

Step: Substitute 35.5x+42 for k in k=991x+27:

k=991x+27

35.5x+42=991x+27

35.5x+42+−991x=991x+27+−991x(Add -991x to both sides)

−955.5x+42=27

−955.5x+42+−42=27+−42(Add -42 to both sides)

−955.5x=−15

−955.5x

−955.5

=

−15

−955.5

(Divide both sides by -955.5)

x=0.015699

Step: Substitute0.015699 for x in k=35.5x+42:

k=35.5x+42

k=(35.5)(0.015699)+42

k=42.5573(Simplify both sides of the equation)

Hope this helps!

:)

6 0
2 years ago
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