Answer:
x = -3
Step-by-step explanation:
1. add 9 to both sides -9x-9+9=x+21+9
2. simplify -9x=x+30
3. subtract x from both sides -9x-x=x+30-x
4. simplify -10x=30
5. divide both sides by -10 -10x/-10 = 30/-10
simplify and you're done!
Answer:
x=-3
Step-by-step explanation:
Original equation: -9x-9 = x+21
Add 9 to both sides: -9x=x+30
Subtract x from both sides: -10x=30
Divide by -10 on both sides: x=-3.
Let me know if this helps!
