Ответ:
[tex]x = 1.625[/tex]
Пошаговое объяснение:
[tex]x + 3 \frac{1}{2} \div 4 = 2x - 5 \frac{1}{4} \div 7 \\ x + 3.5 \div 4 = 2x - 5.25 \div 7 \\ x + 0.875 = 2x - 0.75 \\ x - 2x = - 0.75 - 0.875 \\ - x = - 1.625 \\ x = 1.625[/tex]
(х + 3. 1/2)/4 = (2х - 5. 1/4)/7
7 * (х + 3. 1/2) = 4 * (2х - 5. 1/4)
7 * (х + 7/2) = 4 * (2х - 21/4)
7х + 49/2 = 8х - 84/4
7х - 8х = -84/4 - 49/2
-х = -42/2 - 49/2
-х = -91/2
х = 91/2
х = 45. 1/2 или 45,5
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Ответ:
[tex]x = 1.625[/tex]
Пошаговое объяснение:
[tex]x + 3 \frac{1}{2} \div 4 = 2x - 5 \frac{1}{4} \div 7 \\ x + 3.5 \div 4 = 2x - 5.25 \div 7 \\ x + 0.875 = 2x - 0.75 \\ x - 2x = - 0.75 - 0.875 \\ - x = - 1.625 \\ x = 1.625[/tex]
Verified answer
Пошаговое объяснение:
(х + 3. 1/2)/4 = (2х - 5. 1/4)/7
7 * (х + 3. 1/2) = 4 * (2х - 5. 1/4)
7 * (х + 7/2) = 4 * (2х - 21/4)
7х + 49/2 = 8х - 84/4
7х - 8х = -84/4 - 49/2
-х = -42/2 - 49/2
-х = -91/2
х = 91/2
х = 45. 1/2 или 45,5