On number one:
5 - 2x = 3
-2x = 3 - 5
-2x = -2 (divide both sides by -2 to get x)
-2x/(-2) = -2/(-2)
x = 1
On the second one:
Simplifying
2(x + 1) = 9
Reorder the terms:
2(1 + x) = 9
(1 2 + x 2) = 9
(2 + 2x) = 9
Solving
2 + 2x = 9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2' to each side of the equation.
2 + -2 + 2x = 9 + -2
Combine like terms: 2 + -2 = 0
0 + 2x = 9 + -2
2x = 9 + -2
Combine like terms: 9 + -2 = 7
2x = 7
Divide each side by '2'.
x = 3.5
Simplifying
x = 3.5
On the Third problem:
Simplifying
8x + -5 = 2x + 25
Reorder the terms:
-5 + 8x = 2x + 25
Reorder the terms:
-5 + 8x = 25 + 2x
Solving
-5 + 8x = 25 + 2x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2x' to each side of the equation.
-5 + 8x + -2x = 25 + 2x + -2x
Combine like terms: 8x + -2x = 6x
-5 + 6x = 25 + 2x + -2x
Combine like terms: 2x + -2x = 0
-5 + 6x = 25 + 0
-5 + 6x = 25
Add '5' to each side of the equation.
-5 + 5 + 6x = 25 + 5
Combine like terms: -5 + 5 = 0
0 + 6x = 25 + 5
6x = 25 + 5
Combine like terms: 25 + 5 = 30
6x = 30
Divide each side by '6'.
x = 5
Simplifying
x = 5
Problem 1 (x) equals 1
Problem 2 (x) equals 3.5
Problem 3 (x) equals 5
Hope I helped you today
