Name ________________________ Period ________
Activity Sheet 3-1
Solving Algebraic Equations with Substitution
Directions: Substitute number(s) for variable(s) and solve and simplify the equation.
Example:
3x + 4x = _____ { x = – 5}
3(–5) + 4(–5) =
(–15) + (–20) =
– 35
1. 5x – 2 = _____
2. 12x – 5 = _____
3. 11x + 10 = _____
{ x = – 3}
{ x = – 4}
{ x = – 6}
11. –7x – 2 = _____
{ x = – 8}
12. –2x – 9 = _____
{ x = – 9}
13. – 4x – 8 = _____
{ x = – 2}
4. x – 6 = _____
{ x = – 10}
14. –x – 2 = _____
{ x = – 6}
5. x –  = _____
{ x = – 3}
15. –x + 2 = _____
{x = –}
6. x +  = _____
{ x = – }
16. –2x – 1 = _____
{ x = – 2}
7. x –  = _____
{ x = – 12}
17. –x +  = _____
{ x = }
8. 5x – y = ______
(– 3, 4)
18. y = 2x + b
9. 2x – y = ______
(– 8, – 2)
19. y = – 9x + b
10. 7x – y = ______
(– 2, – 4)
20. y = x + b
b= ______
b= ______
b= ______
(– 8, 5)
(– 3, 10)
( , 2)