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Plz repede! Dau coroana si 50 de puncte!​

Plz Repede Dau Coroana Si 50 De Puncte class=

Răspuns :

Bună!

[tex]x = 4 \\ 2x = 2 \times 4 = 8 \\ x + 3 = 4 + 3 = 7 \\ 2x - 3 = 2 \times 4 - 3 = 8 - 3 = 5 \\ [/tex]

[tex]x = 7 \\ 2x = 2 \times 7 = 14 \\ x + 3 = 7 + 3 = 10 \\ 2x - 3 = 2 \times 7 - 3 = 14 - 3 = 11[/tex]

[tex]x = 11 \\ 2x = 2 \times 11 = 22 \\ x + 3 = 11 + 3 = 14 \\ 2x - 3 = 2 \times 11 - 3 = 22 - 3 = 19[/tex]

[tex]x = 20 \\ 2x = 2 \times 20 = 40 \\ x + 3 = 20 + 3 = 23 \\ 2x - 3 = 2 \times 20 - 3 = 40 - 3 = 37[/tex]

[tex]a = 3 \\ b = 2 \\ a + b = 3 + 2 = 5 \\ 2a - b = 2 \times 3 - 2 = 6 - 2 = 4[/tex]

[tex]a = 2 \\ b = 3 \\ a + b = 2 + 3 = 5 \\ 2a - b = 2 \times 2 - 3 = 4 - 3 = 1[/tex]

[tex]a = 5 \\ b = 1 \\ a + b = 5 + 1 = 6 \\ 2a - b = 2 \times 5 - 1 = 10 - 1 = 9[/tex]

[tex]a = 11 \\ b = 9 \\ a + b = 11 + 9 = 20 \\ 2a - b = 2 \times 11 - 9 = 22 - 9 = 13[/tex]