Question

1.

What is the value of x in the equation –6 + x = –3? (5 points)


–9
–3
3
9
2.
How many solutions does the equation –5a + 5a + 9 = 8 have? (5 points)


None
One
Two
Infinitely many

Answer 1

For number 1 all you have to do is add 6 to both sides of the equation. So -3+6= 3. The answer is positive 3.
And for number 2 the answer is one.

Answer 2

remember, you can do anything to an equationas long as you do it to both sides


1.
-6+x=-3
add 6 to both sides
6-6+x=6-3
0+x=3
x=3


2.
add like terms
-5a+5a+9=8
0a+9=8
0+9=8
9=8
false
no solution
zero solutions