Question

Efetue as adições :
A) (+3/8) + (+1/2)
B) (-2/6) + (+5/4)

Me ajuda por favor

Answer 1

Resposta:

Explicação passo-a-passo:

A) 3/8 + 1/2 = ?

mmc é 8×2 = 16

6/16 + 8/16 = 14/16

14/16 ÷2 = 7/8.

B) (-2/6) + 5/4 = ?

mmc é 6×4 = 24

-8/24 + 30/24 = 22/24

22/24 ÷2 = 11/12.

Answer 2

Resposta:

$a)(+\frac{3}{8} )+(+\frac{1}{2} )\\\\=\frac{3}{8} +\frac{4}{8} \\\\=\frac{3+4}{8} \\\\=\frac{7}{8}$

$b)(-\frac{2}{6} )+(+\frac{5}{4} )\\\\=-\frac{2}{6} +\frac{5}{4} \\\\=-\frac{1}{3} +\frac{5}{4} \\\\=-\frac{4}{12} +\frac{15}{12} \\\\=\frac{-4+15}{12} \\\\=\frac{11}{12}$