Respuesta :

3x-5=x+7
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Subtract x from each side
3x-5-x=x+7-x
2x-5=7
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Add 5 on each side
2x-5+5=7+5
2x=12
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Divide each side by 2
2x ÷ 2 = 12 ÷ 2
x = 6