Question

Which steps are needed to solve this equation?
.
b minus 21 = 177
Subtract 21 from the left side and add 21 to the right side of the equation.
The answer is b = 198.
Check the solution by substituting 198 for b.
Add 21 to the left side and subtract 21 from the right side of the equation.
The answer is b = 156.
Check the solution by substituting 198 for b.
Subtract 21 from both sides of the equation.
The answer is b = 156.
Check the solution by substituting 156 for b.
Add 21 to both sides of the equation.
The answer is b = 198.
Check the solution by substituting 198 for b.

Answer 1

Answer:

D. Add 21 to both sides of the equation.

The answer is b = 198.

Check the solution by substituting 198 for b.

Step-by-step explanation:

D. 21-21= 177+21=198

     0

198-21=177

Answer 2

The steps are needed to solve b - 21 = 177 equation are:

Add 21 to both sides of the equation.

The answer is b = 198.

Check the solution by substituting 198 for b.

What is an equation?

"It is a statement which consists of equal symbol between two mathematical expressions."

What is the solution of the equation?

"It is the set of all values that that make an equation true."

For given question,

We need to solve the equation b - 21 = 177

⇒ b - 21 = 177                                ................(original equation)

⇒ b - 21 + 21 = 177 + 21                 .................(Add 21 to each side)

⇒ b = 198

Therefore, the steps are needed to solve b - 21 = 177 equation are:

Add 21 to both sides of the equation.

The answer is b = 198.

Check the solution by substituting 198 for b.

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