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2-3x+5 = 7-3x
7 - 3x = 7- 3x
7-7 = 3x-3x
0 = 0
PD. seguro que algún signo no esta mal?
Espero te sirva :)
JUNTAMOS LAS X A UN LADO
2-4-3+5=-2x-x+3x
0=0x
se indefine