Resuelve las siguientes ecuaciones: a) 3x + 4 = 25
b) 2x - 4x - 8 = 0
c) 4x = 2x + 60
d) 7 = x - 3
e) 3 + x = 2
f) 11x + 9 - 7x - 7 = 2 - 3x
g) 5x - 2x + x3 = -x + 7
h) 5x - 10x + 6 = -4x + 13
i) 6x - 3x + 2 = 7x
j) 5x + 6 - 3 - x= x + 9 - 6
Respuestas
Ecuaciones:
a) 3x + 4 = 25
3x = 25 - 4
x = 21 ÷ 3
x = 7
b) 2x - 4x - 8 = 0
-2x - 8 = 0
-2x = 0+8
x = 8 ÷ (-2)
x = -4
c) 4x = 2x + 60
4x - 2x = 60
2x = 60
x = 60 ÷ 2
x = 30
d) 7 = x - 3
x = 3 + 7
x = 10
e) 3 + x = 2
x = 2 - 3
x = -1
f) 11x + 9 - 7x - 7 = 2 - 3x
4x + 2 = 2 − 3x
4x = −3x
4x + 3x = 0
7x = 0
x = 0 ÷ 7
x = 0
g) 5x - 2x + x3 = -x + 7
6x = −x + 7
6x = 7 − x
6x + x = 7
7x = 7
x = 7 ÷ 7
x = 1
h) 5x - 10x + 6 = -4x + 13
−5x + 6 = −4x + 13
6 = −4x + 13 + 5x
6 = x + 13
6 − 13 = x
−7 = x
x = -7
i) 6x - 3x + 2 = 7x
3x + 2 = 7x
2 = 7x − 3x
2 = 4x
2/4 = x
1/2 = x
j) 5x + 6 - 3 - x= x + 9 - 6
5x - x + 6 - 3 = x + 9 - 6
4x + 6 - 3 = x + 9 - 6
4x + 3 = x + 3
4x = x
4x − x = 0
3x = 0
x = 0 ÷ 3
x = 0
OoOBossOoO єşţùνσ αqυι...