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3 votes
Which steps are needed to solve this equation?

b+ 6 = 21
O Subtract 6 from both sides of the equation.
The answer is b= 15.
Check the solution by substituting 15 for b.
O Subtract 6 from the left side and add 6 to the right side of the equation.
The answer is b= 27.
Check the solution by substituting 27 for b.
Add 6 to both sides of the equation.
The answer is b= 27.
Check the solution by substituting 27 for b.
Add 6 to the left side and subtract 6 from the right side of the equation.
The answer is b-15.
Check the solution by substituting 15 for b.

User Xupitan
by
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2 Answers

5 votes

Answer:

Subtract 6 from both sides and plug 15 back into b to check

User Jourmand
by
8.2k points
3 votes

Answer:

the answer is A.

you can solve this problem easily by subtracting 21 - 6 and you get your answer. :)

User Sebastian Sastre
by
7.4k points

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