3 years ago

I need an answer to this big question

Mathematics

1 answer:

Kisachek [45]3 years ago

5 0

Answer:

RS + ST = RT

23 - 2x + 9x - 5 = 39

18 + 7x = 39

7x = 39 - 18 = 21

x= 21/7

x = 3

RS = 23 - 2x (given)

RS = 23 - 2(3)

= 23 - 6

RS = 17

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