maTematika 7

12. A - ASavi feris mqone CitebiB - yvavebiC - Citebi, romlebmac ician frena.B=CSavi CitebiAyvavebi == frenis mcodneB Citebisqemidan Cans, rom a) b) da d) WeSmariti ar aris. WeSmaritia g).13. giam mexuTe sarTulze asasvlelad aiara 4 sarTuli. orjer meti safexuri romaiaros, daTom kidev unda aiaros Semdegi 4 sarTuli. Sesabamisad, daTo unda avidesmecxre sarTulze.I Tavis damatebiTi savarjiSoebi2. gaviTvaliswinoT, rom: a) 3 da b) 7 martivi ricxvebia, amdenad, Tu wiladi am mniSvneliTikveceba, maSin igi mTeli ricxvia.3. a) WeSmaritia; b) mcdaria;g) mcdaria; d) WeSmaritia.5. 32527·32324-32528·32323=32527(32323+1)-(32527+1)32323=32527·32323+32527-32527·32323-32323=32527-32323=204.6. 2-is, 3-is, 11-is u. s. j. aris 66. amitom aseTi ricxvi iqneba 67.7. 4+7a=4+4a+3a=4(1+a)+3a. Cven viciT, rom a+1 iyofa 3-ze, 3a-c iyofa 3-ze, e. i. maTi jami3-is jeradia.11. a) WeSmaritia; b) mcdaria;g) WeSmaritia; d) WeSmaritia.113.21 + xgamosaxuleba ar SeiZleba iyos erTze meti, imitom, rom x2 +1 gamosaxulebisumciresi mniSvnelobaa 1, (roca x=0).15. a) Tu x miiRebs mxolod naturalur mniSvnelobebs, 9x 2 -5 gamosaxulebis umciresimniSvneloba iqneba 9·1-5=4.16. a) 20+9x.b) unda amovxsnaT gantoleba 20+9x=200, saidanac x=20.18-22. magaliTebis mizania moswavleebma airCion ariTmetikul moqmedebaTa SesrulebisaTvisra ufro xelsayrelia: zepiri angariSi Tu kalkulatori.a) 512; b) 207; g) 4150512; d) 10; e) 17,98.20. P=2(3x+x) a) 8x=40 5;15b) 8x=60 7,5; 22,539masc_cigni_VII_kl_cor.indd 39 03.07.2012 15:46:30