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kompoz [17]
3 years ago
7

Solve for x. -2x-3=-7

Mathematics
2 answers:
maw [93]3 years ago
7 0

Answer:

x = 2

Step-by-step explanation:

The whole goal when solving problems like this is to get the x alone. So the first step would be to get the -3 over to the other side. To do this, you would add 3 to each side of the equation, so that the -3 on the left side cancels out.

-2x - 3 = -7

+3          +3

-2x = -4

The next thing you need to do is divide each side by -2. You would do this because right now, the equation reads "negative two times x equals negative four". When you divide a multiplication problem, it cancels out, so you are left with just the x.

-2x = -4

÷ -2    ÷ -2

x = 2

You now have the value of x.

Please let me know if you need any more help. I hope this explanation helps you understand a bit better. Have a great day! :)

prisoha [69]3 years ago
3 0

-2x-3=-7

<em>add 3 to both sides</em>

-2x=-4

<em>isolate x by diving both sides by -2</em>

Answer: x=2

Hope that helps!

Please mark brainliest

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Donna bought 3 pairs of pants for $28.50 each. She also bought a necklace for $12.25. She received a discount of 35% off her ent
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Answer:

<em>Donna will have to pay $67.985125 at the register, including the 7% sales tax.</em>

Step-by-step explanation:

Donna bought 3 pairs of pants for $28.50 each.

So, the cost for 3 pair of pants =(28.50\times 3)dollars= 85.50 dollars.

She also bought a necklace for $12.25

Thus, the cost for her entire purchase will be:  (85.50+12.25) dollars = 97.75 dollars.

She received a discount of 35% off her entire purchase. So, the amount of discount =(97.75\times 0.35)= 34.2125 dollars.

Thus, the total selling price will be:  (97.75-34.2125)= 63.5375 dollars.

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3 years ago
How does writing an equation help you solve a problem?
vredina [299]
So you wont forget what you wrote and it helps you to figure out the problem. I hope this helps.
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3 years ago
Pls pls pls pls pls help
Stella [2.4K]

23

Step-by-step explanation:

f(3) =  {(3)}^{2}  + 3(3) - 7 = 9 + 9 - 7 \\  = 18 -  7 = 11

g(3) = 5(3) - 3 = 15 - 3 = 12

f(3) + g(3) = 11 + 12 = 23

RATE BRAINLIEST

6 0
2 years ago
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