Question

Calculați timpul și metoda factorului comun b)1,2×(-7 9/13 )-(-1,2)×2 4/13 ​

Answer 1

Răspuns:

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Answer 2

$\it 1,2\cdot(-\dfrac{100}{13})+1,2\cdot\dfrac{30}{13}=\dfrac{1,2}{13}(-100+30)=\dfrac{12}{130}\cdot70=\dfrac{12}{13}\cdot7=\dfrac{84}{13}=6\dfrac{6}{13}$