Răspuns :

Petroitibiid

Răspuns:

b=49 (x)

c=80 (x)

d=0 (x)

Simionovdenisa6id

Răspuns:

a) (x-16)-5=10

x-16-5=10

×-21=10

×=10+21

×=31

b) (13+x)-40=20

13+x-40=22

-27+x=22

×=22+27

×=49

c)(88-x)×2=16

176-2x=16

-2x=16-176

-2x=-166

x=80

d)(10+x)×5=50

x=0

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