Question

4. Solve 1 - 2x - 1 = -10.
O A. X = -9
O B. X = 5
O C. X= 9
O D. No solution

Answer 1

B.) x=5

Explanation:

move 1 and -1 to the other side with -10 and change signs

-2x=-10+1-1 -> +1-1=0

-2x=-10

+2x=+10 divide both sides by 2

2x/2=10/2

x=5

Answer 2

x = 5

Explanation:

1 - 2x - 1 = -10

- 1 - 1

-2x -1 = -11

+1 +1

-2x = -10

/-2 /-2

x = 5