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3 years ago

N/6=9/3? i dont what this is can someone please help me!!!!

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

8 0

Answer:

n = 18

Step-by-step explanation:

n/6 = 9/3

Simplify the right side

n/6 = 3

Multiply each side by 6

n/6 *6 = 3*6

n = 18

Shtirlitz [24]3 years ago

7 0

Answer:

$\boxed{n=18}$

Step-by-step explanation:

$\frac{n}{6} =\frac{9}{3}$

$\sf Divide \ 9 \ by \ 3.$

$\frac{n}{6} =3$

$\sf Multiply \ both \ sides \ by \ 6.$

$\frac{n}{6} \times 6 =3 \times 6$

$n=18$

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3x-4 or = to 7 plz help

lisabon 2012 [21]

Answer:

3 + 4 = 7 which is true.

Step-by-step explanation:

Whenever you have an equation with a plain variable (that is, no exponent included), there is only one number that will work when substituted for x.

To solve it, you have to "undo" what is done to the variable. You also go in the reverse order of operations, so you do the addition/subtract first, then multiplication/division.

You also have to do the same to both sides, kind of like keeping a balance scale in balance.

In this case, we subtract 4 from both sides first:

3x + 4 -4 = 7 - 4

The + 4 - 4 cancel each other out, so you get:

3x = 3

3x means "3 times x" so you divide by 3 to undo it. I will use the / to indicate division:

3x / 3 = 3 /3

so 1x = 1.

Since 1x is "1 times x" it is the same as x by itself, so:

x=1

AND, if we substitute 1 back into the original equation (the asterisk stands for multiply):

3 * 1 + 4 = 7