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2 years ago

I need help solving this! I need and answer fast

Mathematics

1 answer:

shusha [124]2 years ago

3 0

Solve the porportions. First, cross multiply

7/(x - 4) = 42/12

(7/(x-4))(x-4)(12) = (42/12)(12)(x-4)

7(12) = 42(x-4)

Simplify. (remember to distribute the 42 to both x and -4

84 = 42x - 168

Isolate the x. First add 168 to both sides

84 (+168) = 42x - 168 (+168)

42x = 84 + 168

42x = 252

Finally, isolate the x by dividing 42 from both sides

42x/42 = 252/42

x = 252/42

x = 6

6 is your answer

hope this helps

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What is the GCF of (8x-6) <br><br>sos T-T

makvit [3.9K]

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

We are asked to find the G.C.F. of 8x-6.

$\triangle~\fbox{\bf{KEY:}}$

G.C.F. stands for Greatest Common Factor.

So what is the G.C.F. of 8x-6? We can list all of their common factors and then select the greatest one, like so:

$\longmapsto\bf{Factors\;of\;8x:}$ 1, 2, 4, 8, x

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So the GCF is:

Now, we can also factor it out by placing it outside the parentheses ():

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See, we factored it out by dividing both terms of the expression by the G.C.F.

$\ddot\bigstar$ Remember this...

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Hope this helps you out! :D

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~Just a smiley person helping fellow students :)

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