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simultaneous equations
17/09/2023
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solving simultaneous equallons using sunsillusion exercise: ³. y. 5x -4 y 3x + 12 5x4 = 3x + 12 -12 -5x :2 +26 - 4 = 3x 112 5x-16 = 3x 2. 3yx x = y + 1 novice that y is ine subject of boin equations [102] God x = yr 1 53y-x-1 39-477-1 24-1-2 2y = -9 9² 4.5 J. equale expressions for y, solve to find y -12 -5x X = 3x + 12 X: 3x8 +12 X = 24 +12 x = 36 = 4 - 2/1 + wrong sign nolice in at x is ine subject of one of the equations. Sunsillute the expression xinio ine oiner equation. 7 3y - (y + 101-1 x = y 17 x=517 X 12 in correct. Simultaneous equations classwork 1. 4g + In · 41. 29 +1h 31 ( 49-29-297 = 26² ²9 ² 10 1²/2 9:5 2. 2. 2g 40 = 10 8 a ·40 64 4 x 5 + 7 h 41 ·20 +7h = - -20 : +7 [29-89.697. :6 [ 60 = 542 ²6 9 = 9 sleps 7. underline the maiching equation park. when signs are different, add, when signs are the same. Subirac. 3. find the value of the letter that i501 underlined 9. subsilvie the volue in to the equation. 21 ( 20 - ²1 ) .₁ 1 h 2/3 5. ilmes ine numbers. 6. Subirace the whole number 7. divide by the quantity of the underlined valve. 41 "J. ÷4 2 x 9-41: 10 18-4610 - 20 .40 10. 6= 2.5² Subira cling = 4 n. 3, 9:5 X 9:9, 1:2.5 solving simultaneous equations using the elimination meinad. example: 7x -3x4x =4 [4x = 127=4 x=3 2. 7x + 2y 23 3x +...
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Alternative transcript:
2y = 11 1 4x + 9 -3y₁ = 2x - 197-2 -2x4-2x+3y = × 195 4x-6y=38² X-2 = 1.0. 9x+y=10 4x - 6y=38 0x + 74-28 - 28 уч JET x2 3₁/-2x + 4y = 6 4x + 3y = -3 • 4x + 8y = 12² 34 203x² 4x+8y=12 4x + 3y -3 0x + 5y = 15 1x 3 1 24 X * 4 21 129: 237 -21 5 ( 59 = 15 J÷5 y 3 ÷2 2y -12 (223) X x• 3 y=1 26-J-₁ -21 Чу ку -10 - 4 x - 4 x-4-107 +4²(9x² 192-4 +4 x=3-5 = *G* + 4x367x =2 2x = -6 x = -3 +26 -12 J÷2 +4 'Laber equations and rearrange to correct. form. 2. get the same number OF X'S or y's. 3. elmingle the x's or the y's. 4. solve the equation как как у 5. Substitute in the value you found to I find the other one. y⋅ 3 x²-3 proclice que guions: .. 2 x 1 3 4 : 16 x + 3.у 19 X:2 2. 1x ty.26 3x ty:19 -4х = 12 3+4 Чу X-3 3. 5.x 1 y - 15 lox-y = 15 + Ч 15x = 30 х: 1 :35 29 1 х 10 утx8 Ay = 2 5. Чх ту: 25 : 10 X xiy 1:15 3x ・15 J=5 X = S : хб X -46 :36 = 3,1х3 19:263x хо 2119-262-21 Х у : 5 Б тоб 2 х 2 1 3.4 16 3 2 + 3у - 14 х5 -45 2 x 2 1 3 4 16 Ч 13у 3.4 - 12 3 +3 у-ч -20 206 5x21 ху - IS 3х 10. 14:153-10 9³ + 5 2 x 1 1 - 16 .4 х5 14-25.3x 2) 20 19 = 25 -20 3x лоз-и ус Јх -9 X 2 x-3y=s х=2 у=1015 у=2 х=6. х:54:5 I▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬