Archive for December, 2014

Problem 442

 

Evaluate

\left |-336  \right |

 

Solution

 

When we remove the mod then the value become positive so

-(336)

 

Problem 441

Add \frac{-4}{5}+(\frac{-3}{4})

 

Solution

 

We can write it as

\frac{-4}{5}-\frac{3}{4}

When we multiply a negative value with a positive value then answer will be a negative value

 

Now take LCM which is 20

\frac{(-4\cdot 4-3\cdot 5)}{20}

\frac{-16 -15}{20}

= \frac{-31}{20}

 

Problem 440

 

Add \frac{1}{6}+\frac{1}{2}

 

Solution

 

First take LCM which is 6

\frac{(1\cdot 1+1\cdot 3)}{6}

= \frac{(1+3)}{6}

=\frac{4}{6}

=\frac{2}{3}

 

Problem 439

 

\frac{16\div (-4)\cdot (-2)}{2^{3}-4}

 

Solution

 

First do  multiply

\frac{\frac{16}{8}}{2\cdot 2\cdot 2-4}

=\frac{ \frac{2\cdot 8}{8}}{8 - 4}

=\frac{2}{4}

=\frac{1}{2}

 

Problem 438

 

Multiple (4)(-3)\frac{7}{3}

 

Solution

 

We can see that 3 cancel out now it will become

4(-1)*7

= -28

 

Problem 437

 

Divide \frac{18}{-9}

 

Solution

 

We can write is as

\frac{2*9}{-9}

9 cancel out

\frac{2}{-1}

= -2

 

Problem 436

Divide \frac{-15}{-3}

Solution:-

We can write it as
\frac{-3*5}{-3}
-3 cancel out
= 5

 

Problem 435

Subtract \frac{7}{9} - (-\frac{13}{18})

 

Solution:-

 

We can write it as

\frac{7}{9} +\frac{13}{18}

When we multiply a negative value by a negative sign then it become positive

Now take LCM which is 18

= \frac{(-7*2+13)}{18}

=\frac{(-14+13)}{18}

= \frac{-1}{18}

 

Problem 434

Perform the indicated operation.

\frac{11 - 6}{7 - 7}

 

Solution

 

\frac{5}{0}

When we divide any value by 0 then it become infinite

So the operation is Undefined.

 

Problem 434

Perform the indicated operation.

 

frac{11 - 6}{7 - 7}

 

Solution

 

\frac{5}{0}

When we divide any value by 0 then it become infinite

So the operation is Undefined.