1.5[3(14.5+7)-3]-7.4
1.5 (3 (14.5 + 7) - 3) - 7.4 =
1.5 (3 (21.5) - 3) - 7.4 =
1.5 (64.5 - 3) - 7.4 =
1.5 (61.5) - 7.4 =
92.25 - 7.4 = 84.85
\(1.5[3(14.5+7)-3]-7.4\)
\(=1.5[3*21.5-3]-7.4\)
\(=1.5*61.5-7.4\)
\(=84.85\) !
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