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Roman55 [17]
3 years ago
5

Solve 7d + d - 4d - 7 - 5d

Mathematics
2 answers:
sladkih [1.3K]3 years ago
8 0

 1, Simplify  <span>7d+d-4d-7<span>7d+d−4d−7</span></span> to <span>4d-7<span>4d−7</span></span>
<span>
4d-7=5d<span>4d−7=5d</span></span>

 2.Subtract <span>4d<span>4d</span></span> from both sides
<span>-7=5d-4d<span>−7=5d−4d</span></span>

 3. Simplify <span>5d-4d<span>5d−4d</span></span> to <span>dd</span>
<span>-7=d<span>−7=d</span></span>

 4. Switch sides
<span><span>d=-7<span>d=−7</span></span><span>
5. so your answer would be -7</span></span>
Butoxors [25]3 years ago
6 0
-1d-7 is the answer I'm pretty sure
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Read 2 more answers
|5x-4|&gt;16 solutions
lions [1.4K]

Answer:

x >4                         or            x < -12/5

Step-by-step explanation:

An absolute value has 2 solutions, a positive and a negative.  Remember to flip the inequality for the negative solution

|5x-4|>16

5x-4 > 16        5x-4 < -16

Add 4 to each side

5x-4 +4> 16+4   or     5x-4+4 < -16+4

5x > 20                or        5x < -12

Divide each side by 5

5x/5 > 20/5          or         5x/5 < -12/5

x >4                         or            x < -12/5

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