Question

2x+11=21 solve for the indicated variable

Answer 1

Here is the equation:

$2x+11=21$

Leave the variable alone by subtracting 2 from both sides:

$2x+11 = 21 \\ 2x - 11 = 21-11$

The new equation becomes:

$2x=10$

Leave the variable alone(again) by dividing both sides by 2:

$2x \div 2 = 10 \div 2$

Simplify and it becomes:

$x = 5$