ayudenme estoy en examenes doy corona es esta las 10:10 ayuden porfa con explicacion
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Respuesta:
8- calcula x
5x - 20 = 2(x + 14)
5x - 20 = 2x + 28
3x = 20 + 28
x = 48 / 3
x = 16
7- calcula x
7x - 3 = 3x + 13
4x = 13 + 3
x = 16 / 4
x = 4
6- calcula β
3β + 9 = β + 15
2β = 9 + 15
β = 24 / 2
β = 12
Respuesta:
Ejercicio 6:
3B + 9 = B + 15
3B + 9 - B = 15
2B + 9 = 15
2B = 15 - 9
2B = 6
2B entre 6
B = 3
Ejercicio 7:
7x - 3 = 3x + 13
7x - 3 - 3x = 13
4x - 3 = 13
4x = 13 + 3
4x = 16
4x entre 16
x = 4
ejercicio 8:
5x - 20 = 2 (x + 14)
5x - 20 - x = 2 + 14
4x - 20 = 16
4x = 16 + 20
4x = 36
x = 36 entre 4
x = 9