ocr: and WCALI a1 MIC garaen. This makes the length equal to (x+40) metres. The garden perimeter (x + 40)- is 600 metres, 9o. x+(+40)+x+ + (x+ 40) =600 m Remove the brackets: ***+40****+40 =600 Collect like terms: 4x+ +80 =600 Remove the '+80' by using '-80' on both sides: 4x = - 520
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