Answer:
31
Step-by-step explanation:
ST + TU+ UV = SV
13+6+ 2x-18 = 4x-29
Combine like terms
2x+1 = 4x-29
Subtract 2x from each side
2x+1-2x = 4x-29-2x
1 = 2x-29
Add 29 from each side
1+29 = 2x-29+29
30 =2x
Divide each side by 2
30/2 = 2x/2
15 =x
We want to find the length of SV
SV = 4x-29
= 4*15-29
= 60-29
= 31
