maTematika 7

13.iyogaxdaI brigada x x+12II brigada 4x 4x–18x+12=4x–18 x=10 10; 40.14.siCqare daxarjuli dro gavlili manZiliI matarebeli x km/sT 6 sT 7x km/sTII matarebeli 0,7x km/sT 6 sT 4x–186x+4,2x=612x=60km/sT.erTad 612 km.16.16x100= 16 x=100kg17. I ricxvi — x II ricxvi — 2490–x6,5x=8,5(2490–x)1411; 1089.18.I klasi (x+2) moswavle x+2+x+x+5=84II klasi x moswavle 3x=77III klasi (x+5) moswavleaseTi ganawilebaar SeiZleba.sul 84.19. nekerCxali 2x 2x+x+6x=900muxa x 200; 100; 600cacxvi 6x20. 4.x21. 0,5x+3= - 3 = 16, saidanac x=4.0 , 5322. x= x4+ 1 4 kameCi.23. α+2α+α+30°=180°4α=150°α=37°30′ ∠C= 37°30′ ∠A=75° ∠B= 67°30′24. 5,3–x=7,4. x = –2,1 A(–2,1).80masc_cigni_VII_kl_cor.indd 80 03.07.2012 15:46:51