8/5 a=-6

解答

\frac{8}{5} a = - 6

a = - \frac{15}{4}

十进制

a = - 3.75

求解步骤

\frac{8}{5} a = - 6

在两边乘以

5

8 a = - 30

两边除以

8

a = - \frac{15}{4}

\frac{x + 1}{3} + \frac{x + 2}{7} = 5

so l v e f or h, s = 2 π r^{2} + 2 π r h

29 = 1 + \frac{1}{2} x

8 (5 x - 3) = 6 (- 3 x - 4)

\frac{2}{11} x + 3 = 11