The answer is y would equal -5
Answer:
x=27
Step-by-step explanation:
distribute the 5 to the x and -4 then set both equations equal to each other subtract 4x from both sides add 20 to both sides and you're left with x=27
It would simply take you 20 hours. 90/4= 22.5. 22.5/15= 2.5
You do the reverse and divide the 2 values to find out the last one
72/9 = 8
Do you get it?