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![ x = x/6 + x/12 + x/7 + 5 + x/2 + 4
...........................x = x/6 + x/12 + x/7 + x/2 + 9
...........................x = (1/6 + 1/12 + 1/7 + 1/2) x + 9
...........................x = [(14 + 7 +12 + 42) /84] x + 9
...........................x = 75/84 x + 9
.....................84 x = 75 x + 756
.......................9 x = 756
...........................x = 84](https://image.slidesharecdn.com/12-120621065004-phpapp01/75/12-57-2048.jpg)
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งานนำเสนอ12
The document discusses several mathematical concepts including: 1) Solving linear equations in two variables using substitution and elimination methods. 2) Identifying the slope and y-intercept of linear equations in standard and non-standard form. 3) Applying properties of equality, such as reflexive, symmetric, transitive, additive, multiplicative and distributive properties to solve equations.
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- 47. y = mx+ c m Y c y = 3x + 2 y = 2x - 5 y=x+7 y=-x-8
- 48. 2.Ax + By+ C = 0 x + 2y + 5 = 0 3x - 4y - 12 = 0 8x + 7y - 20 = 0 Ax + By + C = 0 By = - Ax - C Y=-X-( B y = mx + c m=- C=-
- 49. 3. y =c X X C Y=2 X X=2 Y = -5 X X=5
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- 51. X Y X y=0 y X=0 X Y a X b Y X a,0) Y b)
- 52. X y = 2x - 5 y x = 3 , y = 2(3) - 5 = 1 y = 2x – 5 Slope) y = mx + c m Ax + By + C = 0 - y = 2x - 3 x - 2y + 5 = 0
- 53. y = 3x- 5 X x + 4y - 12 = 0 X X Y
- 54. Ax + By+ C = 0 A,B C A,B y = mx + c m c m C x
- 56. x x/6 x/12 x/7 x/2
- 57. x = x/6 + x/12 + x/7 + 5 + x/2 + 4 ...........................x = x/6 + x/12 + x/7 + x/2 + 9 ...........................x = (1/6 + 1/12 + 1/7 + 1/2) x + 9 ...........................x = [(14 + 7 +12 + 42) /84] x + 9 ...........................x = 75/84 x + 9 .....................84 x = 75 x + 756 .......................9 x = 756 ...........................x = 84
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