find the value of x and y , by solving this equation by using cross multiplication method , kal se mei yahi question puch raha hu kya kisi ko cross multiplication method nahi aata kya .
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ANSWER :
X= -11
Y= -7
EXPLANATION :
by Cramer's rule
2x+3y=0
3x+4y=5
D= | 2 3 |
| 3 4 |
=2×4 -3×3
=8-9
= -1
D = -1
DX= | 0 3 |
| 5 4 |
= 0×4 - 3×5
= 4 - 14
= - 11
DX = -11
DY = | 2 0 |
| 3 5 |
= 2×5 - 0×3
= 10 - 3
= 7
DY = 7
DX/ D = -11/-1
X= -11
DY/D = 7/ -1
Y= -7
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