C Which steps are needed to solve this equation?
✓x
b-21 = 177
O 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.
O Subtract 21 from both sides of the equation.
The answer is b= 156.
Check the solution by substituting 156 for b.
O Add 21 to both sides of the equation.
The answer is b= 198.
Check the solution by substituting 198 for b.