Answer :
Step-by-step explanation:
1.
-1 + 2x = 9
to get the solution
2x = 10
x = 5
2.
4 = 8 - x
x = 8 - 4 = 4
x/4 = 1
we could also write this
4 = 8 - x | /4
1 = 2 - x/4
x/4 = 1
x = 4
3.
x/2 - 3 = -5
to solve
x/2 = -2
x = -4
Step-by-step explanation:
1.
-1 + 2x = 9
to get the solution
2x = 10
x = 5
2.
4 = 8 - x
x = 8 - 4 = 4
x/4 = 1
we could also write this
4 = 8 - x | /4
1 = 2 - x/4
x/4 = 1
x = 4
3.
x/2 - 3 = -5
to solve
x/2 = -2
x = -4