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grandymaker [24]
3 years ago
11

2) -2(7n – 6) +n=-3 - 8n

Mathematics
2 answers:
monitta3 years ago
8 0

Answer:

<h2>n = 3</h2>

Step-by-step explanation:

-2(7n-6)+n=-3-8n\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(-2)(7n)+(-2)(-6)+n=-3-8n\\\\-14n+12+n=-3-8n\qquad\text{subtract 12 from both sides}\\\\(-14n+n)+12-12=-3-12-8n\\\\-13n=-15-8n\qquad\text{add}\ 8n\ \text{to both sides}\\\\-13n+8n=-15-8n+8n\\\\-5n=-15\qquad\text{divide both sides by (-5)}\\\\\dfrac{-5n}{-5}=\dfrac{-15}{-5}\\\\\huge\boxed{n=3}

iogann1982 [59]3 years ago
7 0

<em>Answer and Step-by-step explanation:</em>

<em>For this equation the answer is : n=3</em>

<em>Step 1 : Simplify both the sides of the equation :</em>

<em>-2(7n-6)+n=-3-8n</em>

<em>(-2)(7n)+(-2)(-6)+n=-3+-8n   (Distribute)</em>

<em>-14n+12+n=-3+-8n</em>

<em>(-14n+n)+(12)=-8n-3   (Combine the like terms)</em>

<em>-13n+12=-8n-3</em>

<em>-13n+12=-8n-3</em>

<em>Step 2 : Add "8n" to both the sides :</em>

<em>-13n+12+8n=-8n-3+8n</em>

<em>-5n+12=-3</em>

<em>Step 3 : Subtract "12" from both the sides :</em>

<em>-5n+12-12=-3-12</em>

<em>-5n=-15</em>

<em>Step 4 : Divide both the sides by "-5"</em>

<em>\frac{-5n}{-5} =\frac{-15}{-5}</em>

<em>n=3</em>

<em />

<em>That's your final answer : n=3</em>

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