Question

Efetue
1+3/4÷2/3-1/2

Answer 1

$1~+~\dfrac{3}{4}~\div~\dfrac{2}{3}~-~\dfrac{1}{2}~=\\\\\\\\Para~divisao~de~duas~fracoes,~repetimos~a~primeira~e~multiplicamos~\\pelo~inverso~da~segunda\\\\\\\\ =~1~+~\dfrac{3}{4}~\times~\dfrac{3}{2}~-~\dfrac{1}{2}\\\\\\\\=~1~+~\dfrac{3\times3}{4\times2}~-~\dfrac{1}{2}\\\\\\\\=~1~+~\dfrac{9}{8}~-~\dfrac{1}{2}\\\\\\\\MMC~=~8\\\\\\\\=~\dfrac{8\cdot1~+~1\cdot9~-~4\cdot1}{8}\\\\\\\\=~\dfrac{8+9-4}{8}\\\\\\\\=~\boxed{\dfrac{13}{8}}$

Answer 2

Resposta:

Explicação passo-a-passo:

1+3/4÷2/3-1/2

1+3/4*3/2-1/2

1+9/8-1/2

8+9-4/8

13/8