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3 = (1/5)*k-2 // - (1/5)*k-2
2-((1/5)*k)+3 = 0
(-1/5)*k+2+3 = 0
5-1/5*k = 0 // - 5
-1/5*k = -5 // : -1/5
k = -5/(-1/5)
k = 25
-1/5k= -2-3
-1/5k= - 5
-1k= - 5(5)
-1k= - 25
K= - 25/-1
K= 25
▶Resultado final: K=25
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