Answer:
B
Step-by-step explanation:
The absolute value function always gives a positive result
However, the expression inside can be positive or negative
| 2x - 4 | = 10
2x - 4 = 10 ← positive expression
2x - 4 = - 10 ← negative expression
Solving both gives
2x - 4 = 10 ( add 4 to both sides )
2x = 14 ( divide both sides by 2 )
x = 7
and
2x - 4 = - 10 ( add 4 to both sides )
2x = - 6 ( divide both sides by 2 )
x = - 3
