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Answer:
RT = 81
Step-by-step explanation:
RT = RS+ST
13y – 23 = ( 6y+2) + (3y+7)
13y – 23 = 9y +9
13y – 9y = 9+23
4y = 32
y = 32/ 4
y=8
RT= 13y – 23 = 13 (8) – 23 = 104 – 23 = 81
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If you want RS , ST
RS = 6y +2 = 6(8)+2 = 48 +2=50
ST = 3y +7 = 3(8) +7 = 24 + 7 =31
I hope I helped you^_^