40=r(1+36(22))

解答

40 = r (1 + 36 (22))

r = \frac{40}{793}

十进制

r = 0.05044 \dots

求解步骤

40 = r (1 + 36 (22))

交换两边

r (1 + 36 (22)) = 40

两边除以

793

r = \frac{40}{793}

lo g_{5} (106 + 3) + lo g_{5} (106 - 1) = lo g_{5} (5)

11 - 5 (3 x + 2) + 7 x = 1 - 8 x

5 (2 x - 6) = 8 + 3 x

12 (5 x - 4.5) = 36

4 (x - 22) + 5 (x - 20) = x - 4