Matematică
alexandrutancoc
2017-03-10 09:39:45
5a+9b=? Daca: a=111 b=222 8c+2d=? Daca: c=1 d=100 Aflati: a+b+c+d
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stancumariana
2017-03-10 15:55:26

a)5•111+9•222=555+1998=2553 b)8•1+2•100=8+200=208 a+b+c+d=111+222+1+100=434

maradaria2003
2017-03-10 15:56:41

5a+9b=5×111+9×222=555+198=2553 8c+2d=8×1+2×100=8+200=208 a+b+c+d=111+222+1+100=434

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