Question

x + y = -1

x - y = 2/5

Find the value of x and y​

Answer 1

$x + y = - 1 \\ x - y = \frac{2}{5} \\ x + y + x - y = - 1 + \frac{2}{5} \\ 2x = - \frac{ 3}{5} \\ \\ x = - \frac{3}{10} \\ x + y = - 1 \\ - \frac{3}{10} + y = - 1 \\ y = - 1 +\frac{3}{10} \\ \\ y = - \frac{7}{10}$

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Answer 2

Answer:

x = -3/10

y = -7/10

Step-by-step explanation:

x+y=−1

x−y= 2/5

x + y= -1

+ x − y=2/5

--------------------

2x= -1+2/5

2x=−3/5

--------------------

x = −3/ 10

x - y = 2/5

-3/10 - y = 2/5

-y = 2/5 + 3/10

-y = 4/10 + 3/10

y = -7/10