Respuesta :

2|3y-8|+y if y =2.5
2|3(2.5)-8|+2.5 
2|7.5-8|+2.5 
2(0.5)+2.5 
1+2.5
=3.5
Subtitute value of y to the expression:

2 · |3 · 2.5 - 8| + 2.5 = 2 · |7.5- 8| + 2.5 = 2 · |-0.5| + 2.5

= 2 · 0.5 + 2.5 = 1 + 2.5 = 3.5
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