\vec{v}=(3.4)

解答

v = (3.4)

真

求解步骤

v = (3.4)

化简

(3.4) : 3.4

v = 3.4

两侧相等

真

\frac{w}{5 + 2} = \frac{w}{4}

6 y - 2 (y + 1) = 3 (y - 2) + 6

so l v e f or a, 9 (4 a^{2} - 4 ab + b^{2}) = (6 a - 3 b)^{2}

2^{3} - 3^{2} - x = - 2

- \frac{7}{15} x + \frac{1}{5} = - \frac{8}{3}