Resposta:
17 x-1= 15x+3
17x-1 +1= 15x +3+1
17x =15 x +4
17x=15x+4
17x-15x=15x+4-15x
2x=4
x=2
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Resposta:
17 x-1= 15x+3
17x-1 +1= 15x +3+1
17x =15 x +4
17x=15x+4
17x-15x=15x+4-15x
2x=4
x=2