Answer:
x = 2
Step-by-step explanation:
x + y = 7 - 2x + y = 5
hope im right :)
For part B i dont know
Answer: x=−2 and y=9.
Step-by-step explanation: x+y=7
x+y+−y=7+−y
x=−y+7
2x+y=5
2(−y+7)+y=5
−y+14+-14=5+-14
−y/-1=−9/-1
y=9
x=−9+7
x=−2
x=−2 and y=9
