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13. a) ((2(x+1)+10):5+8)·3-6=30((2(x+1)+10):5+8)·3=36(2(x+1)+10):5+8=12(2(x+1)+10):5=42(x+1)+10=202(x+1)=10x+1=5x=4(ucnobi saklebi)(ucnobi Tanamamravli)(ucnobi Sesakrebi)(ucnobi gasayofi)(ucnobi Sesakrebi)b) (((((5x+7):2-1):2)+25):3+4)·5=70((((5x+7):2-1):2)+25):3+4=14((((5x+7):2-1):2)+25):3=10(((5x+7):2-1):2)+25=30((5x+7):2-1):2=5(5x+7):2-1=10(5x+7):2=115x+7=22x=314. zogadi wevri 5n+1, CamoTvlili ricxvebidan mimdevrobas ekuTvnis 91; 226 (5-zegayofisas naSTSi rCeba 1).reziume:3. ricxvis naturaluri xarisximoswavle erTmaneTisgan unda arCevdes terminebs - xarisxi, xarisxis maCvenebeli,xarisxis fuZe. SeeZlos maTi swori gamoyeneba. SeeZlos (u.s.g)-s da (u.s.j.)-s Caweramartivi mamravlebis xarisxebis namravlis saxiT, zogierTi naturaluri xarisxebisgamoTvla. (u.s.g)-s da (u.s.j.)-s gamoyeneba amocanebis amoxsnisas.amoxsnebi, miTiTebebi:6. S=64m 2 =640000sm 27. b) S=6a 2 V=a 3 .8. a) S 1=6(3a) 2 =9·6a 2 =9S.10. magaliTad: 25; 49 (martivi ricxvis kvadrati).29masc_cigni_VII_kl_cor.indd 29 03.07.2012 15:46:27

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