Jika a=25, b=8, dan c=12, maka 4a:(2b:2c)x1-12

100:(16:24)*1-12
100:16:24*11
0.26*11 = 2.86 maaf kalau salah :) @itss_olin

=4(25):(2(8):2(12))x1-12
=100:(16:24)x1-12
=100:0,67x1-12
=149,25-12
=137,25
(Koreksi ya)