Answer:
y =8
RS= 58
ST= 46
RT= 104
Step-by-step explanation:
we can see from the picture:
RS + ST = RT
RS =7y+2
ST=5y +6
RT= 14y -8
so we have:
7y+2 + 5y +6 = 14y -8
12y +8 = 14y -8
12y - 14y= -8-8
-2y = -16
y= 16/2
y=8
so we have:
RS =7y+2 = 7(8) +2
RS= 58
ST=5y +6 = 5(8) +6
ST= 46
RT= 14y -8 = 14(8) -8
RT= 104
