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Jgilsonia
@Jgilsonia
January 2020
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Determine o valor de cada quadro
A) ( )+(-8)-(- )+(-3)=+7
B)(+8)-(- )+(-3)=-5
C) (+48)-(-36)+(-40)-(+ )= -75
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aniziavictoria2
A) x - 8 + x - 3 = 7
2x = 7 +8 + 3
2x = 18
x = 9
9 + (-8) - (-9) +(-3)= 7 (pode conferir)
b) 8 + x - 3=-5
x= -5-8+3
x= -13+3
x= -10
(+8) - (-10) + (-3) = -5
c) 48+36-40-x= -75
75+48+36-40= x
119 = x
(+48)-(-36)+(-40)-(+119)= -75
2 votes
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2x = 7 +8 + 3
2x = 18
x = 9
9 + (-8) - (-9) +(-3)= 7 (pode conferir)
b) 8 + x - 3=-5
x= -5-8+3
x= -13+3
x= -10
(+8) - (-10) + (-3) = -5
c) 48+36-40-x= -75
75+48+36-40= x
119 = x
(+48)-(-36)+(-40)-(+119)= -75