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The given equation is
(Apply distributive property: )
(Multiply: )
According to subtraction property of equality: Subtract 4b from each side.
(Apply commutative property of addition: a + b = b + a)
(Apply additive inverse property: )
(Apply additive identity property: )
(Subtract: )
According to subtraction property of equality: Subtract 6 from each side.
(Additive inverse property: )
(Additive identity property: )
(Subtract: )
According to divison property of equality: Divide each side by nagative 2.
(Cancel common terms and flip the symbol)
(Divide: )
Verify:-
To check the solution, substitute in .
(Substitute b=4)
(Add: )
(Multiply: )
(Subtract: )
Compare the values, the equation is true. The solution is
The value of b is .
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