f=8(-4)-6

解答

f = 8 (- 4) - 6

f = - 38

求解步骤

f = 8 (- 4) - 6

化简

8 (- 4) - 6 : - 38

f = - 38

so l v e f or K, F = - \frac{K}{X ^{2}}

so l v e f or b, 8 a + 3 b = 7

\frac{x}{7} + 6 = 5 - \frac{x}{5}

8 e - 17 = 19 - 4 e

\frac{3}{2} + \frac{1}{2} x = 2 x