Answer:
1. 2x + 5 = 17
Subtract both sides of the equation by 5 to get 2x = 12
Divide both sides by 2 to get x=6
2. 2 (x+9)= 24
Distribute 2 to x and 9 by multiplying to get
2x + 18 = 24
Subtract 18 from both sides to get 2x = 6
Divide both sides by 2
x=3
3. 25= 4 + 7x
Rearrange the equation to get 7x+4=25
Subtract 4 from both sides 7x=21
Divide both sides by 7 to get
x=3
4. x/3 - 6=4
Add 6 to both sides of the equation to get x/3=10
Multiply both sides by 3 to get
x= 30
5. 4x+8=20
Subtract 8 from both sides of the equation to get 4x=12
Divide both sides of the equation by 4
x=3
Explanation: to solve 2-step variable equations, isolate the variable and do the opposite operation to balance it out