The equality is .
Apply subtraction property of equality: If a = b then .
(Subtract 5x from each side)
(Apply commutative property of addition: )
(Apply additive inverse property: )
(Apply additive identity property: )
(Subtract: )
Apply addition property of equality: If a = b then a + c = b + c.
(Add 5 to each side)
(Apply additive inverse property: )
(Apply additive identity property: )
(Add: )
Apply division property of equality: If a = b then .
(Divide each side by 3)
(Cancel common terms)
(Divide: )
Check:
To check, substitute , in .
(Substitute )
(Multiply: )
(Subtract: )
(Add: )
The equality is true.
The equality solution is .
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