Question

Write yes or no if the value given makes the equation true.

1. w – 2 = 5; w = 7
2. 5t = 15; t = 4
3. x + 8= 10; x = 945
4. 5 = x + 3; x = 2

Answer 1

1. yes

2. no

3. no

4. yes

Explanation:

1. substitute w with 7 --> (7) - 2 = 5 --> 5 = 5; true

2. substitute t with 4 --> 5(4) = 15 --> 20 does not = 15; false

3. substitute x with 945 --> (945) + 8 = 10 --> 953 does not = 10; false

4. substitute x with 2 --> 5 = (2) + 3 --> 5 =5; true

Answer 2

1. yes

2.no

3.no

4.yes

Explanation:

just use division, addition, subtraction