Subtract
2
c
2c from both sides of the equation
—
2
c
=
2
c
2c=2c
2
c
−
2
c
=
2
c
−
2
c
2c−2c=2c−2c
2
Simplify
—
Combine like terms
2
c
−
2
c
=
2
c
−
2
c
2c−2c=2c−2c
0
=
2
c
−
2
c
0=2c−2c
Combine like terms
0
=
0
0=0
I think it’s c sorry if it’s wrong
16. Is A.
17. Is D. because 3 x 14 = 42ft
18. Is B. Because 48 x 1/8 = 6mi
Hope this helps!
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$43.60 - $2.40 = $41.20 (4 CDs before tax)
Each CD before tax = $41.20 / 4 = $10.30
Answer
$10.30