Question

verify x-(-y) x+y for X=18, y=20​

Answer 1

Answer:

38=38.. is the correct answer

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

2x+y=5

x−y=5

Adding

3x=5+5

⇒3x=10

⇒x=

3

10

As x−y=5

3

10

−y=5

⇒

3

10

−5=y

⇒y=

3

−5

∴x=

3

10

,y=−

3

5

.