Answer:x=4 y=-1/2
Step-by-step explanation:
4(x+5)=9x + 4x - 34 (given)
4x + 20 = 9x + 4x - 34 (distributive property)
4x + 20 = 13x - 34 (combine like terms)
20 = 9x - 34 (subtraction property of equality)
54 = 9x (subtraction property of equality)
x=6 (division property of equality)
42/24 = 7/4 = 1 3/4 (one and three fourths)
Since y = x•3 and x = -5, -5•3 = -15 so y = -15