Respuesta:
Primera: 7 Segunda: 15
Explicación paso a paso:
1. 8x + 4 = 42 + 18
8x = 60 - 4
8x = 56
x = 7
2. 6x – 18 = 4x + 12
6x - 4x = 18 + 12
2x = 30
x = 15
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Respuesta:
Primera: 7 Segunda: 15
Explicación paso a paso:
1. 8x + 4 = 42 + 18
8x = 60 - 4
8x = 56
x = 7
2. 6x – 18 = 4x + 12
6x - 4x = 18 + 12
2x = 30
x = 15