Determine os valores de X nas equações do 1 grau com uma incógnita
a) 6x=2x+16 h)9x+9+3x=15 o)5x+6x-16=3x+2x-4
b)2x-5=x+1 i)16x-1=12x+3 p)5x+4=3x-2x+4
c) 2x+3=x+4 j)3x-2=4x+9 q)4x-1=3 (x-1)
d)5x+7=4x+10 k)5x-3+x=2x+9 r)3(x-2)=2x-4
e) 4x-10=2x+2 l)17x-7x=x+18 s)2(x-1)=3x+4
f)4x-7=8x-2 m)x+x-4=17-2x+1 t)3(x-1)-7=15
g)2x+1=4x-7 n)x+2x+3-5x=4x-9
Soluções para a tarefa
Respondido por
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a) 6x=2x+16
6x - 2x = 16
4x = 16
x = 16/4
x = 4
b) 2x-5=x+1
2x - x = 1 + 5
1x = 6
x = 6/1
x = 6
c) 2x+3=x+4
2x - x = 4 - 3
1x = 1
x = 1/1
x = 1
d)5x+7=4x+10
5x - 4x = 10 - 7
1x = 3
x = 3/1
x = 3
e) 4x-10=2x+2
4x - 2x = 2 + 10
2x = 12
x = 12/2
x = 6
f)4x-7=8x-2
4x - 8x = - 2 + 7
-4x = 5
x = -5/4
g)2x+1=4x-7
2x - 4x = - 7 - 1
-2x = -8
x = -8/-2
x= -4
h)9x+9+3x=15
9x + 3x = 15 - 9
12x = 6
x = 6/12 : 2
x = 3/4
i)16x-1=12x+3
16x - 12x = 3 + 1
4x = 4
x = 4/4
x = 1
j)3x-2=4x+9
3x - 4x = 9 + 7
1x = 16
x = 16/1
x = 16
k)5x-3+x=2x+9
5x + x - 2x = 9 + 3
6x - 2x = 12
6x = 12
x = 12/6
x = 2
l)17x-7x=x+18
17x - 7x - x = 18
10x - x = 18
9x = 18
x = 18/9
x = 2
m)x+x-4=17-2x+1
x + x + 2x = 17 + 1 + 4
4x = 22
x = 22/4 : 2
x = 11/2
n)x+2x+3-5x=4x-9
x +2x - 5x - 4x = -9 - 3
3x - 9x = - 12
-6x = -12
x = -12/6
x = -2
o)5x+6x-16=3x+2x-4
5x + 6x - 3x - 2x = - 4 + 16
11x - 5x = 12
6x = 12
x = 12/6
x = 2
p)5x+4=3x-2x+4
5x - 3x + 2x = 4 - 4
4x = 0
x = 4
q)4x-1=3 (x-1)
4x - 1 = 3x - 3
4x + 3x = - 3 + 1
7x = - 2
x = -2/7
r)3(x-2)=2x-4
3x - 6 = 2x - 4
3x - 2x = -4 + 6
1x = 2
x = 2/1
x = 2
s)2(x-1)=3x+4
2x - 2 = 3x + 4
2x - 3x = 4 + 6
-1x = 10
x = -10/1
x = -10
t)3(x-1)-7=15
3x - 3 - 7 = 15
3x = 15 + 10
3x = 25
x = 25/3
6x - 2x = 16
4x = 16
x = 16/4
x = 4
b) 2x-5=x+1
2x - x = 1 + 5
1x = 6
x = 6/1
x = 6
c) 2x+3=x+4
2x - x = 4 - 3
1x = 1
x = 1/1
x = 1
d)5x+7=4x+10
5x - 4x = 10 - 7
1x = 3
x = 3/1
x = 3
e) 4x-10=2x+2
4x - 2x = 2 + 10
2x = 12
x = 12/2
x = 6
f)4x-7=8x-2
4x - 8x = - 2 + 7
-4x = 5
x = -5/4
g)2x+1=4x-7
2x - 4x = - 7 - 1
-2x = -8
x = -8/-2
x= -4
h)9x+9+3x=15
9x + 3x = 15 - 9
12x = 6
x = 6/12 : 2
x = 3/4
i)16x-1=12x+3
16x - 12x = 3 + 1
4x = 4
x = 4/4
x = 1
j)3x-2=4x+9
3x - 4x = 9 + 7
1x = 16
x = 16/1
x = 16
k)5x-3+x=2x+9
5x + x - 2x = 9 + 3
6x - 2x = 12
6x = 12
x = 12/6
x = 2
l)17x-7x=x+18
17x - 7x - x = 18
10x - x = 18
9x = 18
x = 18/9
x = 2
m)x+x-4=17-2x+1
x + x + 2x = 17 + 1 + 4
4x = 22
x = 22/4 : 2
x = 11/2
n)x+2x+3-5x=4x-9
x +2x - 5x - 4x = -9 - 3
3x - 9x = - 12
-6x = -12
x = -12/6
x = -2
o)5x+6x-16=3x+2x-4
5x + 6x - 3x - 2x = - 4 + 16
11x - 5x = 12
6x = 12
x = 12/6
x = 2
p)5x+4=3x-2x+4
5x - 3x + 2x = 4 - 4
4x = 0
x = 4
q)4x-1=3 (x-1)
4x - 1 = 3x - 3
4x + 3x = - 3 + 1
7x = - 2
x = -2/7
r)3(x-2)=2x-4
3x - 6 = 2x - 4
3x - 2x = -4 + 6
1x = 2
x = 2/1
x = 2
s)2(x-1)=3x+4
2x - 2 = 3x + 4
2x - 3x = 4 + 6
-1x = 10
x = -10/1
x = -10
t)3(x-1)-7=15
3x - 3 - 7 = 15
3x = 15 + 10
3x = 25
x = 25/3
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