Question

solve X and Y 2x - 3 Y =13 7x- 2 Y =20

Answer 1

2x-3y =13.......(1)x7
7x-2y =20.....(2)x2
Now subtracting eq 2 from 1,
17y=51
Y=3,now substituting value of y in eq1
2x- 9 = 13
X=21/2
X=10.5(@ns)

Answer 2

HELLO!!!
2x-3y = 13------(i)
7x-2y = 20-------(ii)
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USING SUBTITUTION METHOD:
From equation(i)
2x - 3y =13
x = 13+3y/2----------(iii)
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PUTTING ,x= 13+3y/2 in equation (ii)
7(13+3y/2)-2y =20
91 + 21y -4y = 40
17y = 40-91
17y = -51
y = -3
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PUTTING ,y = -3 in equation (iii).
x = 13+3y/2.
x = 13-9/2
x = 4/2
x = 2
SO ,x = 2& y = -3..........

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