Answer:
L = 2*6 - 8 = 12 - 8 = 4
W = 6*6 + 1 = 36 + 1 = 37
That's the math.
Step-by-step explanation:
P = 2*(L + W)
L = 2x - 8
W= 6x + 1
P = 82
2(2x - 8 + 6x+1) = 82 Combine terms in the brackets.
2(8x - 7) = 82 Divide both sides by 2
2(8x - 7)/2 = 82/2
8x - 7 = 41 Add 7 to both sides
8x - 7 +7 = 41+7
8x = 48 Divide by 8
8x/8 = 48/8
x = 6
