1. tìm x a.x+999=30000. b.x-8787=30. c.1999-x=333. 19/10/2021 Bởi Piper 1. tìm x a.x+999=30000. b.x-8787=30. c.1999-x=333.
`x+999=30000` `=> x = 30000 – 999` `=> x = 29001` `x-8787=30` `=> x = 30 + 8787` `=> x = 8817` `1999-x=333` `=> x = 1999 – 333` `=> x = 1666` (Chúc bạn hok tốt ạ) Bình luận
a/ $x+999=30\ 000$ $↔x=30\ 000-999$ $↔x=29\ 001$ b/ $x-8787=30$ $↔x=30+8787$ $↔x=8817$ c/ $1999-x=333$ $↔x=1999-333$ $↔x=1666$ Bình luận
`x+999=30000`
`=> x = 30000 – 999`
`=> x = 29001`
`x-8787=30`
`=> x = 30 + 8787`
`=> x = 8817`
`1999-x=333`
`=> x = 1999 – 333`
`=> x = 1666`
(Chúc bạn hok tốt ạ)
a/ $x+999=30\ 000$
$↔x=30\ 000-999$
$↔x=29\ 001$
b/ $x-8787=30$
$↔x=30+8787$
$↔x=8817$
c/ $1999-x=333$
$↔x=1999-333$
$↔x=1666$