Question

. For x = -9/11
and y = 5/7
verify that (-x) + (-y) = -(x + y).​

Answer 1

Step-by-step explanation:

(-x) +(-y) = -(x+y)

-9/11 + 5/7 = -(-9/11+5/7)

-0.8181 + 0.71 = -(-0.8181 + 0.71 )

.-0.1081 = 0.1081

= -1 ...

Answer 2

Answer:

$Lhs = \frac{9}{11} + \frac{ - 5}{7} = \frac{63 - 55}{77} = \frac{12}{77}$

$Rhs = - ( \frac{- 63 + 55}{77} ) = - ( \frac{ - 12}{77} ) = \frac{12}{77}$

$Hence \: verified.$