Question

6. Efetue os cálculos algébricos a seguir:
-0,85 +(-0,35) =
b. 1-(-0,85)-(-0,35) =
a.
C.
1,6-(-2,8) + (1,9-(-5,6 + 8,1)] =
d.
e.
3 1
10
12
2 5 1
+
3762
1
f.
1-6+3)+(-1+5) =
2

Answer 1

a) $-0,85+(-0,35)=-1,2$

b) $1-(-0,85)-(-0,35)=2,2$

c) $1,6-(-2,8)+[1,9-(-0,56+8,1)]=18,726$

d) $\frac{3}{10} -\frac{1}{12} = \frac{13}{60}$

e) $\frac{2}{3} +\frac{5}{6} -\frac{1}{2} =1$

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