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A)[(x+270:3)*5+100]:600=1

B)9-(25-16):3=[18-3*(9-9(]:x

C)[2*(X+8)*3+4*(x+8)]:4=25

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Răspuns :

Ghiuler1977
a)[(x+90)*5+100]:600=1
(5x+450+100):600=1
(5x+550):600=1
x/120+11/12=1
x+110=120
x=120-110=10 x=10
b)9-3=(18-3):x
6=15x
2=5x  x=2/5
c)6x+48+(4x+32):4=25
6x+48+x+8=25 7x=-31  x=-31/7

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