Respuesta:
3) 10
4) 14
*solo pude las dos primeras
Explicación paso a paso:
3) 3x + 12 = 42 4) 3(x + 2) = 48
3x = 42 -12 3(x + 2) = 48
3x = 30 3x = 48 - 6
x = 30/3 3x = 42
x = 10 x = 42/3
x = 14
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Respuesta:
3) 10
4) 14
*solo pude las dos primeras
Explicación paso a paso:
3) 3x + 12 = 42 4) 3(x + 2) = 48
3x = 42 -12 3(x + 2) = 48
3x = 30 3x = 48 - 6
x = 30/3 3x = 42
x = 10 x = 42/3
x = 14