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27+27:3:3-2×b=10+6:3

Răspuns :

Dianabacircea
27+27:3:3-2b=10+2
27+3-2b=12
30-2b=12
18=2b
b=9
Capsunica35
27+27:3:3-2xb=10+6:3
27+9:3-2b=10+2
27+3-2b=12
30-2b=12
-2b=12-30
-2b=-18 /(-1)
2b=18
b=18/2
b=9