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B) 5X+5=2X+35
DEBES PASAR LAS INCÓGNITAS JUNTAS
5X -2X = 35 -5
3X = 30
X= 30 / 3
X= 10
C) 5(3x + 2) - 5 = 2 (5x + 20)
15X + 10 - 5 = 10X + 40
15X + 5 = 10X +40
15X -10X = 40 -5
5X = 35
X= 35 / 5
X = 7