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j in (-oo:+oo)
(1/3)*(j+100) = 350 // - 350
(1/3)*(j+100)-350 = 0
1/3*(j+100)-350 = 0
1/3*(j+100)-350 = 0
1/3*j-950/3 = 0
1/3*j-950/3 = 0
1/3*j-950/3 = 0 // + 950/3
1/3*j = 950/3 // : 1/3
j = 950/3/1/3
j = 950
j = 950
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