Answer:
Step-by-step explanation:
3) 5x - 3 + 8x - 4 = 5x + 8x - 3 - 4
= 13x - 7
Answer: D
4) Perimeter = sum of all the sides
= x + 1 + x +3 + x - 2 + 2x + 4
= x + x + x + 2x + 1 + 3 - 2 + 4
= 5x + 6
A
5) 4x - 7 - 2 + 3x = 4x + 3x - 7 -2
= 7x - 9
C
