Question

Ajutor va rog, dau 5 stele și coroana​

Answer 1

Răspuns:

5x+45=135

5x=135-45=>x=90:5=>x=18

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270-15x=180

15x=270-180=>x=90:15=>x=6

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x-2=63:7

x=9+2=>x=11

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21x-35=114

21x-35=114+21=>21x=135+35=>x=170:21=>x=8,09

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(4x-5):13=41-36

4x-5=5·13

4x=65+5=>x=70:4=>x=17,5

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51-14x+4=19

14x=51-19-4=>x=28:14=>x=2

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42x=588=>x=588:42=>x=14

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(3x-11):2=20-12

3x-11=8·2

3x=16+11=>x=27:3=>x=9