So first distribute the -.
-8= -x-4
+4 +4
-4=-x and divide -1 on both sides. This becomes x=4.
Apirl is 18 years old and her older sister is 23
Answer: $31.50
Step-by-step explanation:I think; $22.50 x .40=9
$22.50+9=$31.50
610 divided by 4 because when you divide that you will get 152