TEACHING AID - PREVIOUS QUESTIONS

2. QUESTION
5 added to 3 times a
number equals 3
subtracted from 5
times that number.
What is the number?

3. ANSWER
Let the number be x
3x + 5 = 5x – 3
5 + 3 = 5x – 3x
2x = 8
x = 8÷2
= 4
Number = 4

4. QUESTION
7 is added to 5 times a
number equals 37
a)How much is 5 times that
number?
b)If 7 is subtracted from 5
times of the number, what
is the answer?

5. ANSWER
a) 5 times number = 7 subtracted from 37
= 37 – 7
= 30
b) 7 subtracted from 5 times number
= 30 – 7
= 23

6. QUESTION
If 6(x-2) = 4(x+2).
Find x?

7. ANSWER
6(x-2) = 4(x+3)
6x-12 = 4x+12
6x-4x = 12 +12
2x = 24
x = 24÷2
= 12

8. QUESTION
a) x + y = 0
If x is taken as 2, what is
y?
b) Find x – y?

9. ANSWER
a) x + y = 0 , x = 2
2 + y = 0
y = 0 – 2
= -2
b) x=2, y=-2
x-y = 2-(-2)
= 2+2
= 4