Answer:
- 6
Step-by-step explanation:
Step 1:
2x - 9 = - 21 Equation
Step 2:
2x = - 12 Add 9 on both sides
Step 3:
- 12 ÷ 2 Divide
x = - 6
Hope This Helps :)
x = -6
Let x = unknown number
2x -9 = -21
Add 9 to each side
2x -9+9 = -21+9
2x = -12
Divide by 2
2x/2= -12/2
