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Sagot :

ANASAG

Réponse:

a) x < 12-7

x < 5

b) 5+x < -9

x < -9-5

x < -14

c) t-7 > 0

t > 7

d) y+1 > 1,5

y > 1,5 -1

y > 0,5

e) 10+x > -20

x > -20 -10

x > -30

f) t-51 < -30

t < -30 +51

t < 21

g) 4x -3 > 6

4x < 6+3

4x < 9

4x × 1/4 < 9 × 1/4

x < 9/4

h) 3x +2 < -7

3x < -7-2

3x < -9

3x × 1/3 < -9 × 1/3

x < -3

i) -5x +10 < 12

-5x < 12 -10

-5x < 2

-5x × 1/-5 < 2 × 1/-5

x < -2/5

j) -6x +11 > 7

-6x > 7-11

-6x > -4

-6x × 1/-6 > -4 × 1/-6

x > 2/3

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