Pergunta

7w+5=3w-15 w=5 w=-2 w=2 w=-5 5 -2 2 -5
Solução

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ElaineEspecialista · Tutor por 3 anos
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To solve the equation $7w+5=3w-15$, we need to isolate the variable $w$.<br /><br />Step 1: Subtract $3w$ from both sides of the equation.<br />$7w - 3w + 5 = 3w - 3w - 15$<br />$4w + 5 = -15$<br /><br />Step 2: Subtract 5 from both sides of the equation.<br />$4w + 5 - 5 = -15 - 5$<br />$4w = -20$<br /><br />Step 3: Divide both sides of the equation by 4.<br />$\frac{4w}{4} = \frac{-20}{4}$<br />$w = -5$<br /><br />Therefore, the correct answer is $w = -5$.
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