Question

$-9\frac{12}{25} - (-4\frac{11}{22} )=$

Answer 1

-9 12/25 - (-4 11/22) = -237/25 + 99/22 = -474/50 + 225/50 = -249 / 50 = -4,98

Answer 2

Ответ:

$-9\dfrac{12}{25}-\Big(-4\dfrac{11}{22}\Big)=-9\dfrac{12}{25}+4\dfrac{11}{22}=(-9+4)+\Big(\dfrac{11}{22}-\dfrac{12}{25}\Big)=-5+\Big(\dfrac{1}{2}-\dfrac{12}{25}\Big)=\\\\\\=-5+\dfrac{25-2\cdot 12}{2\cdot 25}=-5+\dfrac{1}{50}=-4+\Big(\dfrac{1}{50}-\dfrac{50}{50}\Big)=-4-\dfrac{49}{50}=-4\dfrac{49}{50}$