Question

probar las siguientes ecuaciones

a. 3x+3=3
b. 4x+4=20
c. 3x+=21
d. -5x- = -9
e.-6x -8 = -10

Answer 1

$\\ 3x + 3 = 3 \\ 3x = 3 - 3 \\ 3x = 0 \\ x = \frac{0}{3} \\ x = 0$

$4x + 4 = 20 \\ 4x = 20 - 4 \\ 4x = 16 \\ x = \frac{16}{4} \\ x = 4$

$3x = 21 \\ x = \frac{21}{3} \\ x = 7$

$- 5x = - 9 \\ x = \frac{ - 9}{ - 5} \\ x = \frac{9}{5}$

$- 6x - 8 = - 10 \\ - 6x = - 10 + 8 \\ - 6x = - 2 \\ x = \frac{ - 2}{ - 6} \\ x = \frac{1}{3}$