Question

me ajudaaa namoral porfavor
(╥﹏╥)​

Answer 1

a)

$10x - 2y = 0 \\ 10x - 2 \times 2 = 0 \\ 10x - 4 = 0 \\ 10x = 4 \\ x = \frac{4}{10}$

b)

$x - y = - 8 \\ x - 2 = - 8 \\ x = - 8 + 2 \\ x = - 6$

c)

$7x + y = 5 \\ 7x + 2 = 5 \\ 7x = 5 - 2 \\ 7x = 3 \\ x = \frac{3}{7}$