Question

calculeaza 2 supra 5+ 11 supra 10 plss repede

Answer 1

$\frac{2}{5} + \frac{11}{10} \\ amplificam \: prima \: fractie \: cu \: 2 \\ \frac{2 \times 2}{5 \times 2} + \frac{11}{10} = \frac{4}{10} + \frac{11}{10} = \frac{15}{10} \\ prin \: simplificare \: cu \: 5 = \frac{15 \div 5}{10 \div 5} = \frac{3}{2}$

Answer 2

Răspuns

Explicație pas cu pas:

2 / 5 + 11 / 10 = 3 / 2

= ( 2 × 2 ) / ( 5 × 2 ) + 11 / 10 =

= 4 / 10 + 11 / 10 =

= ( 4 + 11 ) / 10 =

= 15 / 10 =

= ( 15 : 5 ) / ( 10 : 5 ) =

= 3 / 2 =

= 1 intreg si 1 / 2 = 1,5