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Answer:
(A) x=3-y (B) x=2 (C) y=4 (D) x=-3
Step-by-step explanation:
(A) x+y=3 (C) 2y-3=y+1 (D) x+3=0
-y -y -y -y -3 -3
x=3-y 1y-3=1 x=-3
(B) 2x+3=7 +3 +3
-3 -3 1y=4
2x=4 divide by 1 on both sides
divide by 2 on both sides y=4
x=2
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