Jika 2 1/4 × n - [ 1 1/2 + 3/4 ] = 3 makan nilai "n" adalah...
(yg bs jwb sy follow, tolong jwb dgn wajar, makasih ya.)
(yg bs jwb sy follow, tolong jwb dgn wajar, makasih ya.)
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jwb
2 1/4 = 9/4 (campuran ke biasa)
1 1/2 = 3/2
2 1/4 x n - 1 1/2 + 3/4 = 3
9/4 x n - 3/2 + 3/4 = 3
9/4 x n - 15/8 = 3
9/4 x n = 3 + 15/8
9/4 x n = 39/8
n = 39/8 : 9/4
= 39/8 x 4/9
= 13/8
nilai n = 13/8 (1 5/8)