Question

me ajudemm por favorrrrrrrrr help

3/10 + 11/10
7/100 + 8/100
25/138 + 6/138
5/20 + 15/20
25/36 - 13/36
3/100 - 2/100
6/19 - 5/19

Answer 1

Resposta abaixo:

Explicação passo-a-passo:

Vamos lá! Quando os denominadores são iguais, você o conserva.

• Simplifique se necessário.

Então temos:

$\dfrac{3}{10} +\dfrac{11}{10} =\dfrac{14}{10} =\dfrac{7}{5}\\\\\\\dfrac{7}{100} +\dfrac{8}{100} =\dfrac{15}{100} =\dfrac{3}{20} \\\\\\\dfrac{25}{138} +\dfrac{6}{138} =\dfrac{31}{138} \\\\\\\dfrac{5}{20} +\dfrac{15}{20} =\dfrac{20}{20} =1\\\\\\\dfrac{25 }{36} -\dfrac{13}{36} =\dfrac{12}{36} =\dfrac{1}{3}\\\\\\\dfrac{3}{100} -\dfrac{2}{100} =\dfrac{1}{50} \\\\\\\dfrac{6}{19} -\dfrac{5}{19} =\dfrac{1}{19}$