Question

ejrcisios de matematicas por fa

-9x+1=6
-8x+3=-20
x-7=-4
-x-4=-10
4-x=20
10+x=-15
3x-4=2
-7x-4=7
6x+5=3
4-20x=6
5-7x=-10
5x+3=-7
10x-6=20
-4x+10=-15

Answer 1

1)
$- 9x + 1 = 6 \\ - 9x = 6 - 1 \\ - 9x = 5 \\ x = - \frac{5}{9}$

2)
$- 8x + 3 = - 20 \\ - 8x = - 20 - 3 \\ - 8x = - 23 \\ x = \frac{23}{8}$

3)
$x - 7 = - 4 \\ x = - 4 + 7 \\ x = 3$

4)
$- x - 4 = - 10 \\ - x = - 10 + 4 \\ - x = - 6 \\ x = - 6 \div ( - 1) \\ x = 6$

5)
$4 - x = 20 \\ - x = 20 - 4 \\ - x = 16 \\ x = 16 \div ( - 1) \\ x = - 16$

6)
$10 + x = - 15 \\ x = - 15 - 10 \\ x = - 25$
7)
$3x - 4 = 2 \\ 3x = 2 + 4 \\ 3x = 6 \\ x = 6 \div 3 \\ x = 2$

8)
$- 7x - 4 = 7 \\ - 7x = 7 + 4 \\ - 7x = 11 \\ x = - \frac{11}{7}$

9)
$6x + 5 = 3 \\ 6x = 3 - 5 \\ 6x = - 2 \\ x = - 2 \div 6 \\ x = - \frac{1}{3}$

10)
$4 - 20x = 6 \\ - 20x = 6 - 4 \\ - 20x = 2 \\ x = 2 \div ( - 20) \\ x = - \frac{1}{10}$

11)
$5 - 7x = - 10 \\ - 7x = - 10 - 5 \\ - 7x = - 15 \\ x = - 15 \div ( - 7) \\ x = \frac{15}{7}$

12)
$5x + 3 = - 7 \\ 5x = - 7 - 3 \\ 5x = - 10 \\ x = - 10 \div 5 \\ x = - 2$

13)

$10x - 6 = 20 \\ 10x = 20 + 6 \\ 10x = 26 \\ x = 26 \div 10 \\ x = 2.6$

14)
$- 4x + 10 = - 15 \\ - 4x = - 15 - 10 \\ - 4x = - 25 \\ x = - 25 \div ( - 4) \\ x = 6.25$



espero haberte ayudado