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15
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Si el lado de un cuadrado se duplica, su perímetro aumenta 40 m. Calcular lamedida del lado del cuadrado.
su lado es 10
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20
×
Un número multiplicado por 5 sumado con el mismo número multiplicado por 6 da 55. ¿Cuál es el número?
5
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15
×
x-3(x+5)=3x+10
x=-5
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×
eraser
Reset score!
Oops!
×
rocket
Go to first place!
Okay!
×
gift
Win 10 points!
Okay!
×
thief
Give points!
5
10
15
20
25
25
×
El doble de un número aumentado en 12 es igual a su triple disminuido en 5.¿Cuál es el número?
el número es 17
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15
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2(3x+2)=4[2x-5(x-2)]
x=2
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15
×
x-3(x-2)=6x-2
x=1
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15
×
9=3X
X=3
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15
×
25-2x=3x-35
X=12
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20
×
3-2(5-2x)=4x+x-30
x=23
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15
×
7 - 2x + 5 - 3x = - 3
x=3
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×
eraser
Reset score!
Oops!
×
rocket
Go to first place!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 20 points!
Oops!
15
×
2(3x+2)=4[2x-5(x-2)]
x=2
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×
seesaw
Swap points!
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magnet
Take 25 points!
Okay!
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fairy
Take points!
5
10
15
20
25
×
baam
Lose 20 points!
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lifesaver
Give 10 points!
Oops!
×
fairy
Take points!
5
10
15
20
25
×
shark
Other team loses 25 points!
Okay!
×
baam
Lose 10 points!
Oops!
15
×
2 = x + 5
x=-3
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×
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