resolver las sgtes ecuaciones:
A) x + 16 = 41
B) 9x - 45 + 4x - 16 = 4
C) 2x - 3 + x -35 = 2 - 9x - 4
D) 3 · (x - 2) + 9 = 0
E) 8x + 7 - 2x + 5 = 4x + 12 - (x - 30)
F) x + (x + 2) = 36
G) 2 · (3x - 2) - (x + 3) = 8
H) 2 ·(13 + x) = 41 x
I) 2 · (x - 3) - 3 · (4x - 5) = 17 - 8x
Respuestas
A) x + 16 = 41
x = 41 - 16
x = 25
B) 9X - 45 + 4x - 16 = 4
9x+4x-45-16=4
13x - 61=4
13x = 4 + 61
13x = 65
x = 5
C) 2x - 3 + x -35 = 2 - 9x - 4
2x+x-3-35=2-9x-4
3x-3-35=2-9x-4
3x-38=2-9x-4
3x-38=-9x+2-4
3x-38=-9x-2
3x-38+38=-9x-2+38
3x=-9x+36
3x+9x=-9x+36+9x
12x=36
\frac{12x}{12}=\frac{36}{12}
x=3
D) 3 . ( x - 2) + 9= 0
3x - 6 +9 = 0
3x + 3 = 0
3x = -3
x = -1
E ) 8x + 7 -2x + 5 = 4x + 12 - (x - 30)
8x - 2x + 7 + 5 = 4x + 12 - x + 30
6x + 12 = 4x - x +12 +30
6x + 12 = 3x + 42
6x - 3x = 42 - 12
3x = 30
x = 10
F) x + ( x + 2 ) = 36
x + x + 2 = 36
2x = 36 - 2
2x = 34
x = 17
G) 2 . ( 3x -2) - ( x + 3 ) = 8
2( 3x -2) - ( x + 3 ) = 8
6x - 4 - x - 3 =8
6x - x -4 -3 = 8
5x - 7 = 8
5x = 15
x = 3
H) 2 . ( 13 + x) = 41 + x
2( 13 + x) = 41 + x
36 + 2x = 41 + x
2x - x = 41 - 36
x = 5