Maths-
General
Easy
Question
Solve x − 11 = 2x + 9. Write a reason for each step.
Hint:
using the additive property and subtraction property ,division property on both sides .solve for x.
The correct answer is: x = - 20
Ans:- x = - 20
Given , x − 11 = 2x + 9.
Adding 11 on both sides by additive property of equality both sides remain equal.
x – 11 + 11 = 2x + 9 + 11
x = 2x + 20
Subtract 2x from both sides by subtraction property of equality both sides remains equal.
x - 2x = 2x + 20 - 2x
- x = 20
Dividing -1 
by division property of equality both sides remains equal.
∴ x = - 20
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