The equation is .
Apply addition property of equality: Add 6 to each side.
\ (Apply additive inverse property:
)
(Apply additive identity property:
)
(Add: 6.96 + 6 = 12.96)
(Add 0.15c to each side)
Apply commutative property of addition: a + b = b + a
\ (Apply additive inverse property:
)
(Apply additive identity property:
)
(Add: 2.01c + 0.15c = 2.16c)
Apply division property of equality: Divide each side by 2.16c.
\ (Cancel common terms)
(Divide:
)
The solution is .