Answer:
8x + 9
Step-by-step explanation:
Combine 6x and 2x since they are "like variables" meaning they both contain an x, and write in standard form ax + bx + c
Answer:
2 and 4 I am pretty sure. hopeful that's correct.
Answer:
X=3
y=6
Step-by-step explanation:

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hope it helps...
have a great day!!