3 3/4+7 7/8 please help

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

6 0

Answer:

93/8

Step-by-step explanation:

3 3/4=15/4

7 7/8=63/8

15/4+63/8

lcm=8

15*2=30

4*2=8

30/8+63/8= 93/8

Artemon [7]3 years ago

3 0

Answer:

11.625

Hope this helps you!

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worty [1.4K]

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Step-by-step explanation:

6 0

3 years ago

Need help ASAP !!!!!!!

Anestetic [448]

First we distribute $\frac{1}{5}$ into $n$ and $-\frac{1}{7}$ .

$\frac{1}{5} * n = \frac{1}{5} n$
$\frac{1}{5} * -\frac{1}{7} = - \frac{1}{35}$

That makes the left side of the equation

$\frac{1}{5} n - \frac{1}{35} = \frac{1}{6} n$

Now we subtract $\frac{1}{5}n$ from $\frac{1}{6} n$ , which makes $\frac{1}{30}$

Now the equation is

$-\frac{1}{35} = -\frac{1}{30n}$

Our goal is to isolate $n$ , so we both sides by 30

$30* -\frac{1}{35} = - \frac{1}{30}n * 30$

That will make the equation

$- \frac{30}{35} = -n$

We multiply -1 on both sides of the equation:

$\frac{30}{35} = n$

Finally we simplify $\frac{30}{35}$ , which makes $\frac{6}{7}$

So the answer is $n = \frac{6}{7}$