Resuelve las siguientes ecuaciones de
primer grado en tu cuaderno.
a. x + 15 = 42
b. y – 8 = 10
c. 5x + 6 = 31
d. 4x – 6 = 34
e. 6x + 12 + 9x + 8 = 65
f. x + x = 320
g. 4(x + 8) – 12 = 80
Respuestas
a. x + 15 = 42
x = 42 - 15
x = 27
b. y – 8 = 10
y = 10 + 8
y = 18
c. 5x + 6 = 31
5x = 31 - 6
5x =25
x = 25 / 5
x= 5
d. 4x – 6 = 34
4x = 34 + 6
4x = 40
x= 40 / 4
x= 10
e. 6x + 12 + 9x + 8 = 65
15x + 20 = 65
15x = 65 -20
15x = 45
x = 45 / 15
x = 3
f. x + x = 320
2x = 320
x = 320 / 2
x = 160
g. 4(x + 8) – 12 = 80
4(x) + 4(8)
4x + 32 - 12 = 80
4x + 20 = 80
4x = 80 - 20
4x = 60
x = 60 / 4
x = 15
Cada consigna respondida paso a paso :D
Respuesta:
a. x + 15 = 42
x = 42 - 15
x = 27
b. y – 8 = 10
y = 10 + 8
y = 18
c. 5x + 6 = 31
5x = 31 - 6
5x =25
x = 25 / 5
x= 5
d. 4x – 6 = 34
4x = 34 + 6
4x = 40
x= 40 / 4
x= 10
e. 6x + 12 + 9x + 8 = 65
15x + 20 = 65
15x = 65 -20
15x = 45
x = 45 / 15
x = 3
f. x + x = 320
2x = 320
x = 320 / 2
x = 160
g. 4(x + 8) – 12 = 80
4(x) + 4(8)
4x + 32 - 12 = 80
4x + 20 = 80
4x = 80 - 20
4x = 60
x = 60 / 4
x = 15
Explicación paso a paso:
Atte: xany sanchex