Question

1/-9 + (-3)/7+1/2 solve it​

Answer 1

Step-by-step explanation:

$\tt \color{red} \implies\dfrac{1}{ - 9} + \dfrac{( - 3)}{7} + \dfrac{1}{2}$

$\tt \color{darkorange} \implies - \dfrac{1}{9} - \dfrac{3}{7} + \dfrac{1}{2}$

→List the prime factors of each number.

Prime Factors of 9 : 3, 3

Prime Factors of 7 : 7

Prime Factors of 2 : 2

→ Find the union of these primes.

2,3,3,7

→ Multiply these numbers:2×3×3×7=126. This is the LCM.

LCM = 126

$\tt \color{orangered} \implies-\dfrac{1\times 14}{9\times 14}-\dfrac{3\times 18}{7\times 18}+\dfrac{1\times 63}{2\times 63}$

.

$\tt \color{darkcyan} \implies - \dfrac{14}{126} - \dfrac{54}{126} + \dfrac{63}{126}$

$\tt \color{brown} \implies \dfrac{ - 14 - 54 + 63}{126}$

$\tt \color{violet} \boxed{ \boxed{\implies - \dfrac{5}{126} }}$

Answer 2

Answer:

$\frac{1}{-9} + \frac{(-3)}{7} +\frac{1}{2}$ is $- 0.0396$

Step-by-step explanation:

Given-

$\frac{1}{-9} + \frac{(-3)}{7} +\frac{1}{2}$

To find -

Solve $\frac{1}{-9} + \frac{(-3)}{7} +\frac{1}{2}$

Solution -

Given equation,

$\frac{1}{-9} + \frac{(-3)}{7} +\frac{1}{2}$

For addition of  fraction number it is important that all the Denominator should be same .

For that multiply  $\frac{1}{(-9)}$ by $\frac{14}{14}$ , $\frac{(-3)}{7}$ by $\frac{18}{18}$ and $\frac{1}{2}$ by $\frac{63}{63}$ we get

= $\frac{-14}{126} + \frac{(-54)}{126} + \frac{63}{126}$

= $\frac{-14-54+63}{126}$

= $\frac{-68+63}{126}$

= $\frac{-5}{126}$

= $- 0.0396$

By Solving

$\frac{1}{-9} + \frac{(-3)}{7} +\frac{1}{2}$ is $- 0.0396$