10,9 km = .......m? 2,20 m = .Dm?​

y=x+1 3x+y=21
-x+y=1 3x+y=21
First do this. Change one (or both) of the equations so that the x and y are on one side, and the number is on the other. Make sure either the x or the y is the same in both equations (in this case, y) and then take one away from the other. The y will cancel out so you can work out x.
3x+y=21 - -x+y=1
4x = 20 x = 5
Then add the x into one of the two equations to find out y.
3x + y = 21 (3*5) + y = 21 15 + y = 21 y = 6
To check, put both x any y into the other equation.
-5 + 6 = 1
If the answer is correct, you have correctly solved the equations.
x = 5 y = 6
:D

Answered by Anonymous | 2024-06-10

{ 3 x + y = 21 y = x + 1 ​ U s in g s u b s t i t u t i o n m e t h o d 3 x + x + 1 = 21 4 x = 20 ∣ : 4 x = 5 y = 6

Answered by luana | 2024-06-10

The solution to the system of equations is x = 5 and y = 6 . By substituting y = x + 1 into the second equation, we can find the values for both variables. The solution satisfies both original equations.
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Answered by Anonymous | 2024-12-24

Jawaban:10,9 km = 10.900 m2,20 m = 22 dm

Answered by ramaa125 | 2025-08-24