Tìm x 3 x X + 12 = 24 12 : x = 4 X + X + X + X = 20 2 x 5 + 10 = x 20/08/2021 Bởi Iris Tìm x 3 x X + 12 = 24 12 : x = 4 X + X + X + X = 20 2 x 5 + 10 = x
`3 \times x + 12 = 24` ` 3 \times x = 12 + 24` `3 \times x = 36` `12 : x = 4` `x = 12 : 4` `x = 3` `x + x + x +x = 20` `4 \times x = 20` `x = 20 : 4` `x = 5` `2 \times 5 + 10 = x` `10 + 10 = x` `20 = x` `x = 20` Bình luận
a, `3 × x + 12 = 24` `3 × x = 24 – 12` `3 × x = 12` `x = 12 ÷ 3` `x = 4` b, `12 ÷ x = 4` `12 ÷ 4 = x` `⇒ x = 3` c, `x + x + x + x = 20` `4x = 20` `x = 20 ÷ 4` `x = 5` d, `2 × 5 + 10 = x` `⇒ x = 10 + 10` `⇒ x = 20` Xin hay nhất ! Bình luận
`3 \times x + 12 = 24`
` 3 \times x = 12 + 24`
`3 \times x = 36`
`12 : x = 4`
`x = 12 : 4`
`x = 3`
`x + x + x +x = 20`
`4 \times x = 20`
`x = 20 : 4`
`x = 5`
`2 \times 5 + 10 = x`
`10 + 10 = x`
`20 = x`
`x = 20`
a, `3 × x + 12 = 24`
`3 × x = 24 – 12`
`3 × x = 12`
`x = 12 ÷ 3`
`x = 4`
b, `12 ÷ x = 4`
`12 ÷ 4 = x`
`⇒ x = 3`
c, `x + x + x + x = 20`
`4x = 20`
`x = 20 ÷ 4`
`x = 5`
d, `2 × 5 + 10 = x`
`⇒ x = 10 + 10`
`⇒ x = 20`
Xin hay nhất !