Answer:

Step-by-step explanation:
















Hope I helped!
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X + y = 13
x - y = 5
x = (13 - y)
(13-y) - y = 5
13 - 2y = 5
-2y = -8
y = 4
x - 4 = 5
x = 9
x=9, y = 4
Answer:
$7.80
Step-by-step explanation:
$2.60 * 3 = $7.80
Sorry, misunderstood question, answer beneath me much better.