Can someone step by step help me answer the ones that aren’t done

Number 6
Answer:
y = (c - ax)/b
Step-by-step explanation:
ax + by = c
by = c - ax
y = (c - ax)/b
I answered number 5 in your last question.
Step-by-step explanation:
5) C=5(F-32)
9
Multiply both sides by 9
9C=5(F-32)
Divide both sides by 5
9C=F-32
5
Add 32 to both sides
9C+32=F
5