Answer:
j=7
Step-by-step explanation:
10=2j-4 add 4 on both sides
10+4=2j
14=2j divide by 2 on both sides
<u>7=j</u>
Recall the identity
We can see that
Y/4 = -3
Multiply both sides by 4
Y = -12
y = 54
We know the sum of the angles of a triangle are 180
72+y+y = 180
Combine like terms
72 + 2y = 180
Subtract 72 from each side
72-72 +2y = 180-72
2y = 108
Divide each side by 2
2y/2 = 108/2
