Question

1 - 3/5 (n+5/6) = 0,8 (5n/8 - 0,5)

3/5 , n+5/6 e 5n/8 são frações!

Answer 1

1 - 3/5(n + 5/6) = 0,8(5n/8 - 0,5)
1 - (3/5n + 15/30) = 8/10(5n/8 - 5/10)
1 - (3/5n + 15/30) = 40n/80 - 40/100
1 - 3/5n - 15/30 = 40n/80 - 40/100
1 - 3/5n - 1/2 = 1n/2 - 2/5

mmc = 10

10 - 6n - 5 = 5n - 4
-6n - 5n = -4 + 5 - 10
-11n = -9 (*-1)
n = 9/11

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