Question

How do you solve 2x+6y=2 and x+5y=3 using matrices?

Answer 1

$2x + 6y = 2 \: \: \: x + 5y = 3 \\ 2x = 2 - 6y \\ x = (2 - 6y) \div 2 \\ (2 - 6y) \div 2 + 5y = 3 \\ (2 - 6y) + 10y = 3 \\ 2 + 4y = 3 \\ 4y = 3 - 2 \\ 4y = 1 \\ y = \frac{1}{4}$