Question

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

Chapter:Rational numbers. class 8

Kindly answer fast , correctly and properly with workings

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Answer 1

Answer:

LHS(left hand side) = RHS (right hand side)

Step-by-step explanation:

LHS of equation is:

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

= 9/11 - 5/7

= (42 - 55) / 77

= -13/77

RHS of equation is:

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

= -((-42 + 55) / 77)

= -(13/77)

= -13/77

since LHS = RHS, Hence proved

Thank you!

Answer 2

Step-by-step explanation:

Given

x= -9/11 and y= 5/7

We have to find the values of both sides to verify the given equation.

L.H.S

(-x)+(-y) [Putting the values of x and y in L.H.S

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

=9/11 -5/7

LCM of 11 & 7= 77

= (9×7) - (5×11)/ 77

= 63-55/77

= 8/77

R.H.S

-(x+y) [Putting the values of x and y in R.H.S]

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

LCM of 11 & 7= 77

= -((-9×7) +(5×11)/ 77)

= -(-63+55/77)

= -(-8/77)

= 8/77

So L.H.S= R.H.S

Hence verified

Hope you understood