Question

a) x + 8 = 12
b) 2x – 7 = 1
c) 3x -3 = 2x + 5
d) 5x + 7 = 3x + 15
e) 2x + 1 = x – 6
f) 5y – 2 = 2y + 17
***Con procedimiento

Answer 1

¡Hola!.

Resolvemos.

$a)$

$x + 8 = 12$

$x = 12 - 8$

$x = 4$

$==========================================$

$b)$

$2x - 7 = 1$

$2x = 7 + 1$

$2x = 8$

$x = \frac{8}{2}$

$x = 4$

$========================================$

$c)$

$3x -3 = 2x + 5$

$3x - 2x = 5 + 3$

$x = 8$

$========================================$

$d)$

$5x + 7 = 3x + 15$

$5x - 3x = 15 - 7$

$2x = 8$

$x =-  \frac{8}{2}$

$x = 4$

$=========================================$

$e)$

$2x + 1 = x - 6$

$2x - x = -6 - 1$

$x = -7$

$=========================================$

$f)$

$5y - 2 = 2y + 17$

$5y - 2y = 17 +2$

$3y = 19$

$y = \frac{19}{3}$