solvefor a,a(7-b)=12

解答

求解

a, a (7 - b) = 12

a = \frac{12}{7 - b}; b \neq = 7

求解步骤

a (7 - b) = 12

两边除以

7 - b; b \neq = 7

a = \frac{12}{7 - b}; b \neq = 7

- 5 (- 2 x - 5) - x - 1 = - 12 - 12

12 + x = - 2

y = lo g_{\frac{1}{2}} (\frac{1}{4})

7 (x - 1) - 2 (x - 5) = x - 5

6 = \frac{x}{2}