Question

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 .​

Answer 1

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