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Repaso ecuaciones 1º grado 2º ESO

Authored by Lucía Nogueira

Mathematics

8th Grade

Used 58+ times

Repaso ecuaciones 1º grado 2º ESO
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10 questions

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1.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 2x 3 +5x 1 = 7x +2x102x\ -3\ +5x\ -1\ =\ 7x\ +2x-10  

x = -3

x = 6

x = 3

x = 2

2.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 4(x3)+2=3(x+5)+x54\left(x-3\right)+2=3\left(x+5\right)+x-5  

x = 5

No tiene solución

x = 20

Infinitas soluciones

3.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 x+32x23=x52+5\frac{x+3}{2}-\frac{x-2}{3}=\frac{x-5}{2}+5 

(Acuérdate de poner paréntesis cuando sea necesario)

x = -5

No tiene solución

Infinitas soluciones

x = -1

4.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 2+ 2(x+1)5= x2x+352+\ \frac{2\left(x+1\right)}{5}=\ x-\frac{2x+3}{5} 

Quita primero paréntesis y después denominadores.

x = 15

x = 9

No tiene solución

x = -9

5.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 x 2+16x3=56+x623\frac{x}{\ 2}+\frac{1}{6}-\frac{x}{3}=\frac{5}{6}+\frac{x}{6}-\frac{2}{3}  

x = 8

Infinitas soluciones

x = 1

No tiene solución

6.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 5x (2x3+x2)=13(9x12)5x\ -\left(\frac{2x}{3}+\frac{x}{2}\right)=\frac{1}{3}\left(9x-\frac{1}{2}\right) 

Quita primero paréntesis multiplicando, y después denominadores (m.c.m)

 x = 111x\ =\ -\frac{1}{11}  

 x = 4x\ =\ -4  

 x = 111x\ =\ \frac{1}{11}  

 x = 15x\ =\ -\frac{1}{5}  

7.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

 5x+722x43=3x+94+5\frac{5x+7}{2}-\frac{2x-4}{3}=\frac{3x+9}{4}+5  

 x=2913x=\frac{29}{13}  

 x = 6113x\ =\ \frac{61}{13}  

No tiene solución

Infinitas soluciones

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