Respuesta :

skydavidperez

Step-by-step explanation:

For TU is it -2x-4 or 2x-4 cause the question and what on your paper are different

chibunduoyibe

Answer:

20

Step-by-step explanation:

ST= SU - TU

=24 - (2x-4)

=24-2x+4=28-2x

but. 2x-4+3x+8 = 5x+4 = 24

5x=24-4=20

x=20/5=4

so ST=28-2x= 28-2(4)

ST=20

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