Question

Can someone answer these 3 plz like I need these so bad rn. I would really appreciate it if someone who knows it can answer and help me out! Thank you

Answer 1

for the first photo the answer is 5x + 6(-x + 4) = 13

Explanation:

if y equals to -x +4

then replace the y in this equation: 5x + 6y = 13 with this ( -x +4 ) its simple.

I cannot answer the other 2 photos at the moment but ill see if I can whenever else I have time.