3x+1.5y

25
I hope this helps, I know its late, but maybe it will help other people.
Answer:
2
Step-by-step explanation:
Step-by-step explanation:
Answer is 30 I hope this help you
X=3 because 21 divided by 7 is 3
Answer: X = -3
Explanation: subtract 8 from both sides to be left with -4x = 12, then divide both sides by -4 to isolate x which would leave you with X = -3
Hope that helps!