Question

2x +3y=6
4x+2y=10 resolva pela regra de Cremer

Answer 1

2x + 3y = 6

4x + 2y = 10

Segundo a regra de Cramer, x = Dx/D e y = Dy/D.

D = | 2 3 | = +4 -12 = -8

___| 4 2 |

Dx = | 6 3 | = +12 - 30 = -18
____| 10 2 |

Dy = | 2 6 | = +20 -24 = -4
____| 4 10 |

Portanto:

x = Dx/D = -18/-8 = 9/4

y = Dy/D = -4/-8 = 1/2