Answer:
x= 0, y= -1
Step-by-step explanation:
To obtain the values of x and y from a system of equations, start by labelling the given equations.
8x +5y= -5 -----(1)
7x -3y= 3 -----(2)
Let's solve by elimination.
Here, I will be working to eliminate the y term. This is done by ensuring both equations have the same numerical value in the coefficient of y.
(1) ×3:
24x +15y= -15 -----(3)
(2) ×5:
35x -15y= 15 -----(4)
Add the two equations together since the coefficient of y has opposite signs.
(3) +(4):
24x +15y +35x -15y= -15 +15
59x= 0
Divide both sides by 59:
x= 0
Now, substitute the value of x into any equations to find the value of y.
Substitute x= 0 into (1):
8(0) +5y= -5
5y= -5
Divide both sides by 5:
y= -5 ÷5
y= -1
Additional:
For similar questions on system of equations, do check out the following!
Answer / Step-By-Step Explanation:
<em>"Twice one number plus a second number is 42."</em>
2x + y = 42
y = -2x + 42
<em>"The first number is 4 more than 3 times the second."</em>
x - y = -6
x - (-2x + 42) = -6
x + 2x - 42 = -6
3x = 36
First number: x = 12
Second Number: y = -2 (12) + 42 = -24 + 42 = 18
2 × 12 + 18 = 42
(24 + 18 = 42)
Hope this helps!
20 percent the ratio is 16 over 80 multiplied by 100 over 1
2 : 4 : 5
*2 *2 *2
4 : 8 : 10
4+8+10=22
The triangle is 22 meters long.