Respuestas
a)5x = 8x -15
15= 8x - 5x
15= 3x
5 = x
b) 4x + 1 = 2
4x = 2-1
4x = 1
x = 1/4
c) 9x + 7 = -2x + 5
7 - 5 = -2x -9x
2 = -11x
-2/11 = x
d) y - 5 = 3y - 25
25 - 5 = 2y
20 = 2y
10 = y
e) 2y = -10 + 12y
10 = 12y - 2y
10 = 10y
1 = y
f) 5x + 6 = 10x + 5
6 - 5 = 5x
1 = 5x
1/5 = x
g) 21 - 6x = 27 - 8x
8x - 6x = 27 - 21
x = 6
h) 4(x - 10) = -6(2-x) - 6x
4x - 40 = -12 + 6x -6x
4x - 40 = -12
4x = 40 - 12
4x = 28
x = 7
)5x = 8x -15
15= 8x - 5x
15= 3x
5 = x
b) 4x + 1 = 2
4x = 2-1
4x = 1
x = 1/4
c) 9x + 7 = -2x + 5
7 - 5 = -2x -9x
2 = -11x
-2/11 = x
d) y - 5 = 3y - 25
25 - 5 = 2y
20 = 2y
10 = y
e) 2y = -10 + 12y
10 = 12y - 2y
10 = 10y
1 = y
f) 5x + 6 = 10x + 5
6 - 5 = 5x
1 = 5x
1/5 = x
g) 21 - 6x = 27 - 8x
8x - 6x = 27 - 21
x = 6
h) 4(x - 10) = -6(2-x) - 6x
4x - 40 = -12 + 6x -6x
4x - 40 = -12
4x = 40 - 12
4x = 28
x = 7
A
espero berte ayudado dame corona