A red-bellied snake is 11.5 inches long. A ring-necked snake is 1.4 times as long as a red-bellied snake. How much longer is the ring-necked snake than the red-bellied snake?

Let's simplify step-by-step.(1−x)(20)+(1−y)(12)+15(1−z)(20+15+12)Distribute:=(1)(20)+(−x)(20)+(1)(12)+(−y)(12)+(15(1−z))(20)+(15(1−z))(15)+(15(1−z))(12)=20+−20x+12+−12y+−300z+300+−225z+225+−180z+180Combine Like Terms:=20+−20x+12+−12y+−300z+300+−225z+225+−180z+180=(−20x)+(−12y)+(−300z+−225z+−180z)+(20+12+300+225+180)=−20x+−12y+−705z+737=−20x−12y−705z+737