Explanation:
Perimetre = 2(6x + 9) + 2(4x - 1)
;l multiplied by 2 on each and every length because there are 2 sides of equal length
; Then we simplify the brackets
; Perimetres = 12x + 18 + 8x - 2
; Perimetre = 20x + 16
6.5m questions
8.6m answers