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Ex.7 (c,d) urgenttttt!


Ex7 Cd Urgenttttt class=

Răspuns :

c)

12 cm 5 mm = 125 mm

2x/3 + x = 125

2x + 3x = 375

5x=375

x=75 mm

d)

11 cm 2 mm = 112 mm

x/3 + 112 = x

x+336=3x

2x=336

x=168 mm