Answer: 1) You forgot to change the sign over there. You have to subtract over there.
2) Just be careful while solving equations while changing the signs
Answer:
1
Step-by-step explanation:

Answer:
x=0
Step-by-step explanation:
combine like terms on both sides of the equal sign
-9+x= x-7
move similar terms to the same side
-2=0x
divide both sides by x
x=0
Answer:
the answer is 50 dollars
Step-by-step explanation:
because your interest is only 50% so whats 100 divided into 2 its 50