Question

x+y=20 ; x-y=10
x=?
y=?​

Answer 1

Answer:

x+y=20 (eq1)

x-y=10x (eq2)

2x=20+10x

10x-2x=-20

8x=-20

x=-2.5

putting x value in eq1 we get

x+y=20

-2.5+y=20

y=20+2.5

y=22.5

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Step-by-step explanation: