Question

—3x — Зу = 9
— 3х + y = 1

Answer 1

Answer:

X = - 1

Y = - 2

Step-by-step explanation:

$- 3x - 3y = 9 \\ + \\ - 3x + y = 1 \\ = \\ - 3x - 3y = 9 \\ + \\ 3x - y = - 1 \\ = \\ - 4y = 8 \\ y = 8 \div -4 = - 2 \\ - 3x + ( - 2) = 1 \\ - 3x = 3 \\ x = - 3 \div 3 = - 1$