1. 18X – 2X +2 + 6 = 15X +12
2. 7m – 5 = 5m – 13
3. b - 9 = 6b -54
2. 7m – 5 = 5m – 13
3. b - 9 = 6b -54
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Respuesta:
1. 18x-2x+2+6=15x+12
16x+8=15x+12
16x -15x=12-8
x=4
2. = − 4
3. = 9