Răspuns:
Explicație pas cu pas:
x×5+4×9=9×9
x×5+ 36= 81
5x = 81 - 36
5x = 45
x = 45/5
x = 9
9
factor comun:
[tex]x \times 5+4 \times 9=9 \times 9[/tex]
[tex]5 \times x = 9 \times 9 - 4 \times 9[/tex]
[tex]5 \times x = 9 \times (9 - 4)[/tex]
[tex]5 \times x = 5 \times 9 \implies x = 9[/tex]
sau calcul direct:
[tex]5x + 36 = 81 \\ 5x = 81 - 36[/tex]
[tex]5x = 45[/tex]
[tex]x = 45 : 5 \implies x = 9[/tex]
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Răspuns:
Explicație pas cu pas:
x×5+4×9=9×9
x×5+ 36= 81
5x = 81 - 36
5x = 45
x = 45/5
x = 9
Răspuns:
9
Explicație pas cu pas:
factor comun:
[tex]x \times 5+4 \times 9=9 \times 9[/tex]
[tex]5 \times x = 9 \times 9 - 4 \times 9[/tex]
[tex]5 \times x = 9 \times (9 - 4)[/tex]
[tex]5 \times x = 5 \times 9 \implies x = 9[/tex]
sau calcul direct:
[tex]5x + 36 = 81 \\ 5x = 81 - 36[/tex]
[tex]5x = 45[/tex]
[tex]x = 45 : 5 \implies x = 9[/tex]