Question

Efetue as adições e subtraçoēs:
a)(3/2)+(-1/2)=
b)(-0,45)+(-7,5)=
C)(-5/9)-(2)=

Answer 1

Resposta:

a) 1

b) $- 7,95$

c) $-\frac{23}{9}$

Explicação passo a passo:

a)

$\frac{3}{2} + (-\frac{1}{2})\\\\\frac{3}{2} -\frac{1}{2} \\\\\frac{3-1}{2}\\\\ \frac{2}{2} = 1$

b)

$(-0,45)+(-7,5)=\\-0,45-7,5=\\-7,95$

c)

$(-\frac{5}{9}) - 2 =\\\\-\frac{5}{9} - 2 =\\\\-\frac{5+18}{9} = \\\\-\frac{23}{9}$