Without solving them, say whether these equations have a positive solution, a negative solution,
a zero solution, or no solution.
Positive solution= the answer is a positive number.
Negative solution= the answer is a negative number.
Zero solution= the answer is zero.
Negative solution= the variable goes away, so you can't solve it!
a. 3x=5
b. 5z+7=3
c. 7-5w=3
d. 4a=9
e. y=y+1