what is the value of Dx for simultaneous equation 3x-2y=6 and 2x+y=11
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Answered by
4
3x - 2y = 6 -------(1)
2x + y = 11 -------(2)
(2) * 2 => 4x + 2y = 22 -------(3)
(1)+(3) => 3x-2y+4x+2y = 6+22
7x = 28
x = 4
y = 11-2x
y = 11-8
y = 3
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Answered by
3
Step-by-step explanation:
3x-2y=6________eq.1
2x+y=11_________eq.2
multiply by 2 in eq. 2
4x+2y=22_______eq.3
on adding eq 1 and eq 2
3x-2y=6
4x+2y=2
__________
7x=8
x=8/7
put value of x in eq . 1
3×8/7-2y=6
24/7-2y=6
-2y=6-24/7
-2y =18/7
y=18/7/-2 =-9/7
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