1. 8.4 Examples
Math 9

3. That means all sides of A add up and equal all sides of B
But lets make our life easier…
…half way around A is equal to half way around B
This means that

4. 3x - 4 + (1. 4x + 2) = 8 – 2. 6x + (5 + 2x) 4. 4x – 2 = 13 – 0. 6x + 0
3x (1.4x + 2) = 8 – 2.6x + (5 + 2x) 4.4x – 2 = 13 – 0.6x + 0.6x +0.6x 5x - 2 = x = 15 ÷5 ÷5 X = 3 But we are not asked to solve for x

5. Dimensions of A 1.4(3) + 2 =6.2 3(3) -4 = 5 6.2 x 5 B A
Dimensions of A 1.4(3) + 2 =6.2 3(3) -4 = x 5
Dimensions of B 5 + 2(3) = 11 8 – 2.6(3) = x 0.2

6. Now try #4 with your partner
The first step is to multiply both sides by 4 and then simplify
Next step is to distribute numbers into the brackets
Now combine all numbers
Get k to appear only on one side
You should be able to complete the rest yourself
Answer is -3/2 or -1.5

7. Now onto the Warm up