2( x + 3) + 4( 2 – 2x ) = 2( x – 2) nhanh tay nha mn 19/07/2021 Bởi Adalyn 2( x + 3) + 4( 2 – 2x ) = 2( x – 2) nhanh tay nha mn
Đáp án: 2( x + 3) + 4( 2 – 2x ) = 2( x – 2) <=> 2x + 6 + 8 – 8x = 2x – 4 <=> 2x – 8x – 2x = – 4 – 6 – 8 <=> – 8x = – 18 <=> x = $\frac{-18}{-8}$ = $\frac{9}{4}$ ~Xin hay nhất ạ~ Bình luận
`2(x+3) + 4(2-2x) = 2(x-2)` `⇔ -6x + 14 = 2x – 4` `⇔ -6x = 2x – 18` `⇔ -8x = -18` `⇔ x = 9/4` Bình luận
Đáp án:
2( x + 3) + 4( 2 – 2x ) = 2( x – 2)
<=> 2x + 6 + 8 – 8x = 2x – 4
<=> 2x – 8x – 2x = – 4 – 6 – 8
<=> – 8x = – 18
<=> x = $\frac{-18}{-8}$ = $\frac{9}{4}$
~Xin hay nhất ạ~
`2(x+3) + 4(2-2x) = 2(x-2)`
`⇔ -6x + 14 = 2x – 4`
`⇔ -6x = 2x – 18`
`⇔ -8x = -18`
`⇔ x = 9/4`