Question

15-x/2-25%x = 1,5 (3-4x)

Answer 1

15-x / 2 -25/100 x = 1,5(3-4x)
15-x/ 2 - 0,25 x = 4,5 - 6x
(2-0,25x) * 4,5 -6x= 15 -x
Agora é com vocE hehe

Answer 2

15-x/2-25% . x = 1,5 (3-4x)
15 - x/2 -25 x/100=3/2 (3-4x)
15-x/2 - x/4= 9/2 -12x/2
30/2 -x/2 -x/4=9/2-12x/2
-x/2+12x/2-x/4=9/2-30/2
11x/2- x/4=-21/2
MMC
(22x-x)/4 =-42/4
22x-x=-42
21x=-42
x=-2

Tirar a prova:
30/2 - x/2- x/4=9/2-12x/2
30/2 -(-2)/2-(-2)/4= 9/2 - 12(-2)/2
30/2+2/2+1/2=9/2+24/2
33/2= 33/2
Espero ter ajudado vc....