Respuesta:
a) x = 5
b) x = 12
Explicación paso a paso:
a) 2(x + 5) = 20
2x + 10 = 20
2x = 20 - 10 = 10
x 0 10/2 = 5
b) 5x - 12 = 48
5x = 48 + 12 = 60
x = 60/5 = 12
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Respuesta:
a) x = 5
b) x = 12
Explicación paso a paso:
a) 2(x + 5) = 20
2x + 10 = 20
2x = 20 - 10 = 10
x 0 10/2 = 5
b) 5x - 12 = 48
5x = 48 + 12 = 60
x = 60/5 = 12