Răspuns:
Explicatie pas cu pas:
ex 5
Primul mod : (32 - 16 - 8) : 8 = (16 - 8) : 8 = 8 : 8 = 1
Al doilea mod : (32 - 16 - 8) : 8 = 32 : 8 - 16 : 8 - 8 : 8 = 4 - 2 - 1 = 2 - 1 = 1
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ex 6
13 + 24 - 8 × a = 10 : 2
37 - 8 × a = 5
8 × a = 37 - 5
8 × a = 32
a = 32 : 8 = 4
Verificare : 13 + 24 - 8 × 4 = 10 : 2
13 + 24 - 32 = 5
37 - 32 = 5
5 = 5
