the point of intersection of lines 2 X + 7 Y = 21 and 4 x + 5 Y equal to 11 is
Answers
Answered by
12
Step-by-step explanation:
Just solve like linear equation to do so!
2x +7y = 21
4x +14y = 42..........(1)
4x +5y = 11............(2)
from (1)&(2)=>
9y = 31
y = 31/9
put y = 31/9 in (2)
4x +5y = 11
4x = 11-155/9
4x = -56/9
x = -56/36
x = -28/18
x = -14/9
So intersection point is=>
(x, y) = (-14/9, 31/9)
Answered by
1
Answer:
hey mate your answer is
Step-by-step explanation:
2x+7y=21....(1)
4x+5y=11........(2)
eq. 1 multiply by 4
8x+28y=84.......(3)
eq. 2 multiply by 2
8x+10y=22.......(4)
from 3 and 4
8x+28y=84
8x+10y=22
(-)(+)=(-)
0+18y=62
y=62/18
y=31/9.
put in x.
you will get x=-14/9
mark the brilliant answer.
Similar questions