Advertisements
Advertisements
Question
Simplify:
Solution
\[\frac{- 2}{5} - \frac{- 3}{10} - \frac{- 4}{7}\]
\[\text{Taking the L . C . M .} \hspace{0.167em} \text{of the denominators:} \]
\[\frac{- 28}{70} - \frac{- 21}{70} - \frac{- 40}{70}\]
\[ = \frac{( - 28) - ( - 21) - ( - 40)}{70}\]
\[ = \frac{- 28 + 21 + 40}{70}\]
\[ = \frac{33}{70}\]
APPEARS IN
RELATED QUESTIONS
Add the following rational numbers:
Simplify:
What number should be added to \[\frac{- 5}{7}\] to get\[\frac{- 2}{3}?\]
Simplify each of the following and express the result as a rational number in standard form:
Simplify:
Fill in the blanks:
The product of a positive rational number and a negative rational number is always .....
Divide:
Find ten rational numbers between \[\frac{1}{4} \text{and} \frac{1}{2} .\]
State, True Or False
`7/9=(7+5)/(9+5)`
Insert a rational number between:
7.6 and 7.7
