Question

En cada caso hallar el valor de la variable o incógnita:
1. x + 8 = 12
x = 12 – 8
x = _____
2. 2x + 12 = -3x + 32
2x + 3x = 32 –
5x = 20

20
x 
x = ______
3.
15 7
3
2x
 

3
2x
_____
2x = 8 . ____
2x = 24

24
x 
x = 12
4. 4x = 20 + 12
4x = 32

32
x 
x = ____

Answer 1

Respuesta:

x=12

32-5=27

x=20

2x+3=5

8×4=24

x=32