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Calculati
(C_75):5=125
4x(bx5)=200
421_(b+138)=109


Răspuns :

1)(C-75):5=125
C-75=625
C=625+75
C=700
2)4x(bx5)=200
5b=200:4
5b=50
b=50:5
b=10
3)421-(b+138)=109
b+138=421-109
b+138=312
b=312-138
b=174
Sper ca te-am ajutat!
(C-75):5=125
C-75=125x5
C-75=625
C=625+75
C=700

4x(bx5)=200
bx5=200:4
bx5=50
b=50:5
b=10

421-(b+138)=109
b+138=421-109
b+138=312
b=312-138
b=174