Question

yours climaniton Qro² QNO O su-3y =37 - 2u tiy--38 192=-5 - 4+ y +262 2 23nt7y +82-13 an Sohne method For exane bu+4y=2 methed 34-sy=-394 Solettlon 6n+4y=2-0 30-s.y =-34 0.5 multiple egi() os (butu) - sut2y +82 (i 3u-5y = 39 34 +2y = 2 & Lois etc continue

Answer 1

Ans: 1) sx-3y 52-3y = 37 37 +0 -28 +7y=-38-70 Фx9 @xsi: 1024-6y=74 -102 +354 =-190 299=116 y=116 29 substitute -4 in equation ® sa - 3x4=37,'. 52= 37+ 12 a=49 S =9.8 2) 2 32 + 7y+87= -13 20toy +92 = -52 -9 + 9 +20 2 = 2? > do the condition 1 2 equation 2 644+144+162 =-26 bato 4,272 = (515 144-IKL =-11 ☺ 32 +74 +872-13-7 144-112 =-11 y + 262 = 6 do the condition 6 – 14③ to eliminate 'I from equation ③ 146-112 lyly +3642 = 84 -llz =-11 3752 = 95 '. 38 +74+87=-13-70 147 -112=-11- 3752 = 95 : 2 = 95 375 = 0.25

substitute equation ® in equation luy - 11095 "(c) = -11 .. .: y = -44 = 0,59 75 32 + 7y+87 =-13 مک -44 75 حم 3 z = 95 375 substitute equation @ § ③ in equation 38+7X(-445)+8699.02) =-13 a = 75 273 25 375 x 273 IS 9 -44 75 2 १5 375