Question

if 8x+5y=27 and 5x+8y=-66 then find the value of (x+y)

Answer 1

here is ur answer mate...
u have gotcha solve.
simultaneous equation to find X and y

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.hope u r helped

Answer 2

The value is $x+y=-3$.

Step-by-step explanation:

Given : Equations 8x+5y=27 and 5x+8y=-66.

To find : The value of (x+y) ?

Solution :

Let   $8x+5y=27$ ....(1)

$5x+8y=-66$ ....(2)

Adding (1) and (2),

$8x+5y+(5x+8y)=27+(-66)$

$13x+13y=-39$

$13(x+y)=-39$

$x+y=-\frac{39}{13}$

$x+y=-3$

Therefore, the value is $x+y=-3$.

#Learn more

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