Răspuns :
a-b = 27
a:b=4 | x b
a = 4b
=> 4b-b = 27
3b=27|:3
b= 9
=> a = 27 + 9 = 36
a:b=4 | x b
a = 4b
=> 4b-b = 27
3b=27|:3
b= 9
=> a = 27 + 9 = 36
1.a-b=27
30-3=27
2.a:b=4
16:4=4
Problemele:
1.Maria are 30 de timbre.Ionela are cu 3 mai putin timbre.
Cate timbre are Ionela?
30-3=30
2. Jessica are 16 bomboane.Marius are de 4 ori mai putine bomboane.
Cate bomboane are Marius?
16:4=4
30-3=27
2.a:b=4
16:4=4
Problemele:
1.Maria are 30 de timbre.Ionela are cu 3 mai putin timbre.
Cate timbre are Ionela?
30-3=30
2. Jessica are 16 bomboane.Marius are de 4 ori mai putine bomboane.
Cate bomboane are Marius?
16:4=4