ayuda por favor doy corona
Respuestas
a) 2x + 3 = 9
2x = 9 - 3
x = (9 - 3)/2
x = 3
b) 3x - 5 = 10
3x = 10 + 5
x = 15/3
x = 5
c) x + 4x = 7 + 13
5x = 20
x = 20/5
x = 4
d) 2 + 7x - 3x = 18
4x = 16
x = 16/4
x = 4
e) 9 + 5x - 4 + 1x = 23
5x + 1x = 23 - 9 + 4
6x = 18
x = 18/6
x = 3
f) 10x - 5 - 2x = 9 + 5x + 7
10x - 2x -5x = 9 + 7 + 5
3x = 21
x = 21/3
x = 7
Respuesta:
a) 3 , b) 5, c) 4, d) 4, e)3, f)7
Explicación paso a paso
a) 2x + 3 = 9
2x + = 9- 3
2x = 6
x = 6/2
x = 3
b) 3x - 5 = 10
3x = 10 + 5
3x = 15
x = 15/3
x = 5
c) x + 4x = 7 + 13
5x = 20
x = 20/5
x = 4
d) 2 + 7x - 3x = 18
2 + 4x = 18
4x = 18 - 2
4x = 16
x = 16/4
x = 4
e) 9 + 5x - 4 + x = 23
5x + x + 9 - 4 = 23
6x + 9 - 4 = 23
5x + 5 = 23
5x = 23 - 5
6x = 18
x = 16/6
x = 3
f) 10x - 5 - 2x = 9 + 5x + 7
8x - 5 = 9 + 5x + 7
8x - 5 = 5x + 9 + 7
8x - 5 = 5x + 16
8x - 5x = 16+ 5
3x = 21
x = 21/3
x = 7