Resolva as equações:
A) 2x -19 = -7
B) 4x -6 =22
C) 14x +8 = 6x -8
D) 3x +1 = x +9
E) 4x -11 = 7 -2x
F) 13x +1 -10x = 5 +x
G) 2x -1= x +5
H) 2x +4 = x +5
Respostas
respondido por:
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A) 2x-19=-7
2x= -7+19
2x=12
x=12/2 =>6
B)4x-6=22
4x=22+6
4x=28
x=28/4 =>7
C)14x+8=6x-8
14x-6x=-8-8
8x=-16
x= -16/8 => -2
D) 3x+1=x+9
3x-x=9-1
2x=8
x= 8/2=>4
E) 4x-11=7-2x
4x+2x=7+11
6x=18
x=18/6 =>3
F) 13x+1-10x=5+x
13x-10x-x=5-1
2x=4
x=4/2 =>2
G) 2x-1=x+5
2x-x=5+1
x=6
H) 2x+4=x+5
2x-x=5-4
x=1
2x= -7+19
2x=12
x=12/2 =>6
B)4x-6=22
4x=22+6
4x=28
x=28/4 =>7
C)14x+8=6x-8
14x-6x=-8-8
8x=-16
x= -16/8 => -2
D) 3x+1=x+9
3x-x=9-1
2x=8
x= 8/2=>4
E) 4x-11=7-2x
4x+2x=7+11
6x=18
x=18/6 =>3
F) 13x+1-10x=5+x
13x-10x-x=5-1
2x=4
x=4/2 =>2
G) 2x-1=x+5
2x-x=5+1
x=6
H) 2x+4=x+5
2x-x=5-4
x=1
respondido por:
0
a) 2x-19=-7
2x=-7+19
2x=2
x=2/2
x=1
b) 4x -6 =22
4x=22+6
4x=28
x=28/4
x=7
c) 14x +8 = 6x -8
14x-6x=-8-8
-2x=-16 (-1)
2x=16
x=16/2
x=8
d) 3x +1 = x +9
3x-x=9-1
2x=8
x=8/2
x=4
e) 4x -11 = 7 -2x
4x+2x=7+11
6x=18
x=18/6
x=3
f) 13x +1 -10x = 5 +x
13x-10x-x=5-1
3x-x=4
2x=4
x=4/2
x=2
g) 2x -1= x +5
2x-x=5+1
x=6
h) 2x +4 = x +5
2x-x=5-4
x=1
2x=-7+19
2x=2
x=2/2
x=1
b) 4x -6 =22
4x=22+6
4x=28
x=28/4
x=7
c) 14x +8 = 6x -8
14x-6x=-8-8
-2x=-16 (-1)
2x=16
x=16/2
x=8
d) 3x +1 = x +9
3x-x=9-1
2x=8
x=8/2
x=4
e) 4x -11 = 7 -2x
4x+2x=7+11
6x=18
x=18/6
x=3
f) 13x +1 -10x = 5 +x
13x-10x-x=5-1
3x-x=4
2x=4
x=4/2
x=2
g) 2x -1= x +5
2x-x=5+1
x=6
h) 2x +4 = x +5
2x-x=5-4
x=1
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