Dive into the world of knowledge and get your queries resolved at IDNLearn.com. Our platform offers reliable and detailed answers, ensuring you have the information you need.
Sagot :
Answer:
1) X + y = 5 , 2 x − y = 7
2) x = 67 /15, y = -32/5
Step-by-step explanation:
- Solve for y in the first equation
- Replace all occurencies of y with -32/5 in each equation
- Then solve for the first equation
The solution to the system is the complete set of ordered pairs that are valid solutions, and the result can be shown in multiple forms.
Answer:
1) x = 6, y = - 1
2) x = 4.4667, y = -6.4
Step-by-step explanation:
1)
x + y = 5
2x - y = 7
First, let's solve for x using the first equation.
x + y = 5
x = -y + 5
Next, let's substitute the x value into the second equation.
2x - y = 7
2(-y + 5) - y = 7
-2y + 10 - y = 7
-2y - y + 10 = 7
-3y = -3
y = -1
Now, let's substitute y into the first equation.
x + y = 5
x + (-1) = 5
x = 6
Therefore, x = 6, y = -1
2) 3x + y = 7
-7 - 5y = 25
First, let's solve for y in the second equation.
-7 - 5y = 25
-5y = 32
y = -6.4 or y = -6 [tex]\frac{2}{5}[/tex] or y = -[tex]\frac{32}{5}[/tex]
Next, let's substitute the y value into the second equation.
3x + y = 7
3x +(-6.4) = 7
3x = 13.4
x = 4.4667 (answer is rounded) or x = 4[tex]\frac{14}{30}[/tex] or x = [tex]\frac{134}{30}[/tex]
Therefore, x = 4.4667, y = -6.4
Hope this helped <3
We appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Accurate answers are just a click away at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.