Question

Rezolvati in {R} urmatoarele ecuatii:
9x+11=5
8x+27=2x
35-7x=8x
7x-22=3x
Urgent! Dau 30 de puncte!

Answer 1

Răspuns:

9x+11=5

9x=5-11

x=-6/9

x=-0,(6)

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8x+27=2x

27=2x-8x

27=-6x

x=-27/6

x=-4,5

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35-7x=8x

35=8x+7x

35=15x

x=35/15

x=2,(3)

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7x-22=3x

7x-3x=22

4x=22

x=22/4

x=5,5