(2x)/3+4=10

解答

\frac{2 x}{3} + 4 = 10

x = 9

求解步骤

\frac{2 x}{3} + 4 = 10

将

4

到右边

\frac{2 x}{3} = 6

在两边乘以

3

2 x = 18

两边除以

2

x = 9

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

so l v e f or s, - 8 r + 18 s = - 4

100 = - 5 (8 x + 4)

so l v e f or p, (p + q)^{2} = p^{2} + q^{2}

x^{2} + 10 x + 25 = (x + 5)^{2}