Odpowiedź :
Cześć ;)
2 * 5x - 7 = 8
10x - 7 = 8
10x = 8 + 7
10x = 15 / : 10
x = 1,5
[tex]2 \cdot 5x - 7 = 8 \\10x - 7 = 8 /+7\\10x = 15/ :10\\x = \dfrac{15}{10} = \dfrac{3}{2}= 1\dfrac{1}{2}[/tex]
Cześć ;)
2 * 5x - 7 = 8
10x - 7 = 8
10x = 8 + 7
10x = 15 / : 10
[tex]2 \cdot 5x - 7 = 8 \\10x - 7 = 8 /+7\\10x = 15/ :10\\x = \dfrac{15}{10} = \dfrac{3}{2}= 1\dfrac{1}{2}[/tex]