20k+5=5k+65

解答

20 k + 5 = 5 k + 65

k = 4

求解步骤

20 k + 5 = 5 k + 65

将

5

到右边

20 k = 5 k + 60

将

5 k

para o lado esquerdo

15 k = 60

两边除以

15

k = 4

a + 15 = 2

\frac{4 z + 1}{3} + 4 = \frac{z + 3}{2} + 2 (z + 2)

so l v e f or x, [(x - 3)] \frac{2}{16} + [(y - 1)] \frac{2}{25} = 1

so l v e f or x, 2 x - 2 y = - 6

so l v e f or x, 2 x - 2 y = - 2