Resolva as equações do 1° grau:
a) x + 4 = 19
b) x – 7 = 13
c) x - 6 = 13
d) x + 1 = - 9
e) 5x – 6 = 34
f) 8x + 3 = 27
g) 4x – 4 = 44
h) 6x + 3 = x + 38
i) 6x - 4 = 3x + 20
j) 7x + 12 = 3x – 20
Soluções para a tarefa
a) x + 4 = 19
x=19-5
x=15
b) x – 7 = 13
x=13+7
x=20
c) x - 6 = 13
x=13+6
x=19
d) x + 1 = - 9
x=-9-1
x= -10
e) 5x – 6 = 34
5x=34+6
5x=40
x=40/5
x=8
f) 8x + 3 = 27
8x=27-3
8x=24
x=24/8
x=3
g) 4x – 4 = 44
4x=44+4
4x=48
x=48/4
x=12
h) 6x + 3 = x + 38
6x - x= 38- 3
5x=35
x=35/5
x=7
i) 6x - 4 = 3x + 20
6x - 3x= 20+4
3x=24
x=24/3
x=8
j) 7x + 12 = 3x – 20
7x - 3x= -20 -12
4x=-32
x=-32/4
x= -8
Espero ter ajudado
Resposta:
A) x=15
B) x=20
C) x=19
D) X= -10
E) X=8
F) x=3
G) X=12
H) X=7
I) X=8
J) X= -8
Explicação passo-a-passo:
A) X=19-4 / X= 15
B) x= 13+7 / X=20
C) X=13+6 / X=19
D) X= -9 -1 / X= -10
E) 5x= 34+6 -> 5x=40 -> x=40/5 -> X=8
F) 8x=-27-3 -> 8x=24 -> x=24/8 ->x=3
G) 4x=44+4 -> 4x=48 -> x=48/4 -> x=12
H) 6x - x=38-3 -> 5x=38-3 -> 5x=35 -> x=35/5 -> X=7
I) 6x-3x=20+4 -> 3x=24 -> x=24/3 -> X=8
J) 7x-3= -20 -12 -> 4x= -32 -> X= -8