解方程~~(5)

1)Y+Y*2/9=44
2y=44*9/2
2y=22*9
y=99
2)ｙ＋ｙｘ１／８＝１３５００
y+y/8=13500
y+y =13500*8
2y=108000
y=54000
3)ｙ＋ｙｘ１／１０＝１７６
y+y/10 =176
2y=176*10
y=1760/2
y=880
４）ｙ＋ｙｘ１／５＝５４
2y=54*5
y=135



I hope can help you!111!!!!!

y+2/9y=44 (先乘除,後加減) 驗算:36+36*2/9
=36+4*2
(1+2/9)y=44 =36+8
=44
(11/9)y=44 =右邊

y=44/11*9

y=4*9

y=36

y+y x 2/9 =44
y x 2/9 = 44-y
9(y x 2/9)=(44-y)9
9y x 2 = 396 - 9y
18y = 396 - 9y
18y+9y=396
27y=396
y = 14又27分之18

2007-02-04 16:15:40 補充：
y + 2y/9 = 449y/9 + 2y/9 = 4411y/9 = 4411y = 44 x 9y = 396 / 11y = 36

ｙ＋ｙ x ２／９（９分之２）＝４４
y + 2y/9 = 44
9y/9 + 2y/9 = 44
11y/9 = 44
11y = 44 x 9
y = 396 / 11
y = 36

ｙ＋ｙ　ｘ（乘）　２／９（９分之２）＝４４

11/9 (11分之9) Y = 44

Y = 36