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  • Usuário do Brainly
2013-11-18T15:28:36-02:00
5x-3+x=2x+9
5x+x-2x=3+9
4x=12
x=12/4
x=3
2013-11-18T15:35:25-02:00
Olá,

5X-3+X=2X+9

6X-3=2X+9

6X-2X=9+3

4X=12

X= \frac{12}{4}

X=3

ESPERO TER AJUDADO!! :)
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