2x - y=8.....1
3x + y=17....2 using elimination method
5 answers
Solve
add the two equations to eliminate y.
5x = 25
now finish it off
5x = 25
now finish it off
2 x - y = 8
+
3 x + y = 17
__________
5 x = 25
x = 25 / 5
x = 5
Insert this value into the first or second equation, whichever.
For example:
3 x + y = 17
3 ∙ 5 + y = 17
15 + y = 17
Subtract 15 to both sides.
y = 2
The solution is x = 5 , y = 2
You can also write equation as ( 5 , 2 )
Where fist number is x coordinate , second number is y coordinate.
+
3 x + y = 17
__________
5 x = 25
x = 25 / 5
x = 5
Insert this value into the first or second equation, whichever.
For example:
3 x + y = 17
3 ∙ 5 + y = 17
15 + y = 17
Subtract 15 to both sides.
y = 2
The solution is x = 5 , y = 2
You can also write equation as ( 5 , 2 )
Where fist number is x coordinate , second number is y coordinate.
You can also write the solution of equation as ( 5 , 2 )
Thank's correct