At Westonci.ca, we connect you with experts who provide detailed answers to your most pressing questions. Start exploring now! Explore a wealth of knowledge from professionals across different disciplines on our comprehensive platform. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.
Sagot :
It might be C or D im also doing substitution so i don’t really know
Answer: B. -4
When 2 equations equal the same thing (in this case y) we can just re-write the equations this way:
3x + 1 = 2x - 3
Now, just start picking off little numbers that we don’t really need to get the x alone. I don’t like working with negative numbers, so i’ll get rid of the -3 by adding 3 to it. Since anything you do on one side of an equal sign you have to do on the other, i’ll add 3 to 1, which looks like this:
3x + 1 = 2x - 3
+3 +3
3x + 4 = 2x
Now I need to get both x’s on the same side, so i’ll subtract 3x from 3x, then subtract 3x from 2x:
3x + 4 = 2x
-3x -3x
4= -x
Variables should never be negative, and they look complicated too, so in order to make x positive again i’ll swap it’s side with 4. While doing this, remember that swapping sides means you swap 4 to a negative too:
4 = -x
x= -4
And there’s the answer, X equals -4. If you wanted to solve for y, just plug in the x value (which is -4 in this case) to any one of the equations:
y= 3x + 1
y= 3(4) + 1
y= 12+ 1
y= 13
Hope this helped!
When 2 equations equal the same thing (in this case y) we can just re-write the equations this way:
3x + 1 = 2x - 3
Now, just start picking off little numbers that we don’t really need to get the x alone. I don’t like working with negative numbers, so i’ll get rid of the -3 by adding 3 to it. Since anything you do on one side of an equal sign you have to do on the other, i’ll add 3 to 1, which looks like this:
3x + 1 = 2x - 3
+3 +3
3x + 4 = 2x
Now I need to get both x’s on the same side, so i’ll subtract 3x from 3x, then subtract 3x from 2x:
3x + 4 = 2x
-3x -3x
4= -x
Variables should never be negative, and they look complicated too, so in order to make x positive again i’ll swap it’s side with 4. While doing this, remember that swapping sides means you swap 4 to a negative too:
4 = -x
x= -4
And there’s the answer, X equals -4. If you wanted to solve for y, just plug in the x value (which is -4 in this case) to any one of the equations:
y= 3x + 1
y= 3(4) + 1
y= 12+ 1
y= 13
Hope this helped!
We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.