Dados os numeros x = 1 - [4+ (4 - 2 - 5) -(. 7 + 3)] , y = 2 - [ 7 - (. 1 - 3 + 6) - 8 Calcule
a) x+y= b) x-y= c) y-x = d) x= e) -( x-y) = d) y2 =
a) x+y= b) x-y= c) y-x = d) x= e) -( x-y) = d) y2 =
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1(4+(-3)-10)+2-(7-4-8)
1-(4-3-10)+2-(-5)
1+9+2+5=
17
b) x-y
1-(4+(-3)-10)-2-(7-4-8)
1-(4-3-10)-2-(-5)
1-(-9)-2+5
1+9-2+5=
13
c)y-x
2-(7-4-8)-1(4+(-3)-(-4))
2-(-5)-1 (4-3+4)
2+5-1×5
2+5-5=
2
d)x=
1(4+(-3)-(-4))
-1 (4-3+4)
-1×5=
-5
e)-(x-y)
-((4-(-3)-10+2-(7-4-8))
-((4-3-10)+2-(-5))
-((-9)+2+5)
-(-9+2+5)
-(-2)= 2
f)y=
2-(7-(1-3+6)-8)
2-(7-4-8)
2-(-5)
2+5=7