19-10-2017
Mathematics

contestada

90+6x-7.5x<30
please help me

Respuesta :

maddielr17 maddielr17

19-10-2017

ok so:
90 + 6x - 7.5x < 30

6x - 7.5x = -1.5

90 - 1.5x < 30
-90 -90
-1.5x < -60

-60/-1.5

x=40

40 < 30

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