Question

tìm y

a ) y + 3251 = 2450 x3 

b)7890 - y = 2018+605

c)(3586 -y);7=168

d)357 : y = 5(dư 7)

Answer 1

`a ) y + 3251 = 2450 xx3 `

`y+3251=7350`

`y=7350-3251`

`y=4099`

`b)7890 - y = 2018+605`

`7890-y=2623`

`y=7890-2623`

`y=5267`

`c)(3586 -y):7=168`

`3586-y=168xx7`

`3586-y=1176`

`y=3586-1176`

`y=2410`

`d)357 : y = 5(dư 7)`

`(357-7):y=5`

`350:y=5`

`y=350:5`

`y=70`

Answer 2

a: =>y+3251=7350

=>y=4099

b: =>7890-y=2623

=>y=5267

c: =>3586-y=1176

=>y=2410