1.

Solve for x and y, x=3y, x + y = 12.​

Answer»

ANSWER:

x=9 y=3

Step-by-step explanation:

x=3y. (1)

x+y= 12. ( 2)

put (1) in (2)

3y+y=12

4y=12

y =3

put value of y in either 1 or 2

x+3=12

x=9

Verification

x+y=12

9+3=12

x=3y

9=3×3

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