a) x = -2
Y = 3(-2)+18Y = -6 + 18Y = 12
Therefore, when x = -2, y = 12.
б) y = -3
3x + 18 = -33x = -21x = -7
Therefore, when y = -3, x = -7.
a) x = -2
Y = 3(-2)+18
Y = -6 + 18
Y = 12
Therefore, when x = -2, y = 12.
б) y = -3
3x + 18 = -3
3x = -21
x = -7
Therefore, when y = -3, x = -7.