Matematică
georgianapp
2015-11-10 23:29:54
va rog mult trebuie sa aflati x ul
Răspunsuri la întrebare
Cont şters
2015-11-11 02:47:22

d) 17/23·x=92 x=92:17/23=92·23/17 e)23/6·x=54 x=54:23/6=54·6/23=324/23 f)31/12·x=96 x=96:31/12=96·12/31=1152/31 g)x/(x+1) · 12=8 12x/(x+1)=8 12x=8(x+1) 12x=8x+8 12x-8x=8 4x=8 x=8:4=2 h)(3x+1)/(2x+5) · 252=20 252(3x+1)=20(2x+5) 756x+252=40x+100 756x-40x=100-252 716x=-152 x=-152/716=-76/358=-38/179 i) x/3 · (x+1)=4 x(x+1)=3·4 → x=3

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