3 years ago

How many solutions does this equation have? (15x + 21) / 3 = 5x + 7

Mathematics

1 answer:

Lesechka [4]3 years ago

7 0

Answer:

3*(5*x-7)-(15*x-21)=0

Step-by-step explanation:

3 • (5x - 7) - (15x - 21) = 0

Step 2 :

Equation at the end of step 2 :

0 = 0

Step 3 :

Equations which are always true :

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3 years ago

-14n + q=rt-4n, for n

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N = -1/10rt + 1/10q
= −14n+q+4n=rt−4n+4n
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3 0

3 years ago

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8=56<br> 7=42<br> 6=30<br> 5=20<br> 3=?

m_a_m_a [10]

$3=6$

In this case, the pattern is the number, in this case, 3, multiplied by the number below it.

See?
$8\times7=56\\7\times6=42\\6\times5=30\\5\times4=20\\3\times2=6$

Hope this helped :)

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2 years ago

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