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solve by
Cramer s. method 32-4y=10,9x+2y 5.
Answers
Answered by
3
Answer:
x=2/5
y=7/10
Step-by-step explanation:
D=32 -4
9 2
= 32×2 -(-4)×9
= 64+36
=100
Dx= 10 -4
5 2
=10×2 -(-4)×5
=20+20
Dx =40
Dy=32 10
9 2
=32×5 - 10×9
=160-90
=70
x=Dx/D
=40/100
=4/10
=2/5
y=Dy/D
=70/100
=7/10
hope it will help you
Answered by
0
Step-by-step explanation:
3x-4y=10 9x+2y=5
a1x+b1y=c1 a2x+b2y=c2
a1=3,b1=4,c1=10 a2=9,b2=2,c2=5
D=a1 b1
a2 b2
=3 4
9 2
=(3×2) - (9×4)
=6-36
= -30
Dx= c1 b1
c2 b2
= 10 4
5 2
= (10×2) - (2×5)
= 20 - 10
=10
Dy= a1 c1
a2 c2
= 3 10
9 5
= (3×5) - (10×9)
=15 -90
= - 75
by crammers rule
x= Dx/D
= 10/-30
=1/-3
y= Dy/D
= -75/-30
= -3/-2
=3/2
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