Sorry to waste time, but could you help? 5/3(4/3a+9b+2/3a) simplified, take your time! I’m not the best at math so :p
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<em>Greetings from Brasil...</em>
Isolating S:
B = [(S+Z)/4]·h
B/h = (S + Z)/4
<h2>S = (4B/h) - Z</h2>