ayuda por favor a)x+14=20 b) 2x+3=21 c) 3x+9=39 d) 2x+4=6 e) x+3=18 f) 6x-2=16 g) x-19=4 h) x+18=64 i) 3x+6=24
Respuestas a la pregunta
Respuesta:
a) x+14 = 20
1x = 20-14
1x = 6
x = 6/1
x = 6
b) 2x+3 = 21
2x = 21-3
2x = 18
x = 18/2
x = 9
c) 3x+9 = 39
3x = 39-9
3x = 30
x = 30/3
x = 10
d) 2x+4 = 6
2x = 6-4
2x = 2
x = 2/2
x = 1
e) x+3 = 18
1x = 18-3
1x = 15
x = 15/1
x = 15
f) 6x-2 = 16
6x = 16+2
6x = 18
x = 18/6
x = 3
g) x-19 = 4
1x = 4+19
1x = 23
x = 23/1
x = 23
h) x+18 = 64
1x = 64-18
1x = 46
x = 46/1
x = 46
i) 3x+6 = 24
3x = 24-6
3x = 18
x = 18/3
x = 6
Ecuaciones de primer grado
A)
x + 14 = 20
x = 20 - 14
x = 6
B)
2x + 3 = 21
2x = 21 - 3
2x = 18
x = 18/2
x = 9
C)
3x + 9 = 39
3x = 39 - 9
3x = 30
x = 30/3
x = 10
D)
2x + 4 = 6
2x = 6 - 4
2x = 2
x = 2/2
x = 1
E)
x + 3 = 18
x = 18 - 3
x = 15
F)
6x - 2 = 16
6x = 16 + 2
6x = 18
x = 18/6
x = 3
G)
x - 19 = 4
x = 4 + 19
x = 23
H)
x + 18 = 64
x = 64 - 18
x = 46
I)
3x + 6 = 24
3x = 24 - 6
3x = 18
x = 18/3
x = 6
Espero te ayude, que tengas un lindo día <3.