Resposta:
[tex]x + x + 70 = 80 \\ 2x + 70 = 180 \\ 2x = 180 - 70 \\ 2 x=110 \\ \frac{110}5 \\ \\ x = 55[/tex]
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Resposta:
[tex]x + x + 70 = 80 \\ 2x + 70 = 180 \\ 2x = 180 - 70 \\ 2 x=110 \\ \frac{110}5 \\ \\ x = 55[/tex]