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h in (-oo:+oo)
154 = (22/7)*(7/11)^2*h // - (22/7)*(7/11)^2*h
154-((22/7)*(7/11)^2*h) = 0
(-22/7)*(7/11)^2*h+154 = 0
154-14/11*h = 0 // - 154
-14/11*h = -154 // : -14/11
h = -154/(-14/11)
h = 121
h = 121
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