Question

Cramer rule 3x-y=6 ,2x-15=-3y​

Answer 1

Step-by-step explanation:

$\Huge\underline{\underline{\sf ANSWER}} \\ 3x - y = 6 \\ 2x + 3y = 15 \\ \\ d = | \binom{3 \: \: \: \: - 1 \: \: \: \: \: }{2 \: \: \: \: \:\: \: \: \: \: 3 \: \: \: \:} | \\ d = 9 - ( - 2) \\ d = 11 \\ \\ dx = | \binom{ - 1 \: \: \: \: \: 6}{3 \: \: \: \: 15} | \\ dx = 18 - ( - 15) \\ dx = 33 \\ \\ dy = | \binom{3 \: \: \: \: 6}{2 \: \: \: \: 15} | \\ dy = 12 - 45 \\ dy = - 33 \\ \\ x = \frac{dx}{d} = \frac{33}{11} = 3 \\ y = \frac{dy}{d} = \frac{ - 33}{11} = - 3 \\ \\ so... \\ (x,y) = (3 ,- 3)$