Chapter 3 Note Card

  • June 2020
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2/x = 12/x – 20

m/2 = m – 40/12

17v/2 = 34/3

2(x – 20) = x x 12

m x 12 = 2(m – 40)

17v/2 = 34/3 x 17

2x – 40 = 12x

12m = 2m – 80

v/2 = 34/51

-40 = 10x

10m = -80

34 x 2/51

X = -4

X = -8

V = 4/3

CHECK

CHECK

CHECK Substitute -4 for x 2/-4 = 12/-4 – 20

Substitute -8 for m

Substitute 4/3 for v

2/-4 = 12/-24

-8/2 = -8 – 40/12

17 x 4/3/2 = 34/3

-4 x 12 = 2 x -24

-8 x 12 = 2(-8 – 40)

68/3/2 = 34/3

-48 = -48

-96 = -96

2 x 34 = 3 x 68/3 (68 = 68)

w/8 = 7 (7 x 8 = 56) w = 56 Output is 1 less than 3 times the input. Output = 8. 8 = 3x – 1 8 + 1 = 3x 9 = 3x X=3

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