urgent cine il face i dau coroana

Răspuns:

a) -3 1/3 -x = 2

-10/3-x = 2

x = -10/3-2

x = -10/3-6/3

x = -16/3

b) x+(-4,5) = 3 1/2

x-4,5 = 7/2

x-4,5 = 3,5

x = 4,5+3,5

x = 8

c) x•(-7/8) = 5,6

-7x/8 = 56/10

-7x•10 = 8•56

-70x = 448

x = 448:(-70)

x = -6,4

d) (-10 1/5):x = 2

(-51/5):x = 2

x = (-51/5):2

x = -5,1

e) x:4,5 = 1/3

x:45/10 = 1/3

x = 1/3•45/10

x = 45/30

x = 3/2 = 1,5

f) x:10² = -0,02

x = -0,02•10²

x = -0,02•100

x = -2.

EVERGREEN