3x-35=-14+7x
<=> 3x-35+14-7x=0
<=> -4x-21=0
<=> -4x=21
<=> x=\(\frac{-21}{4}\)
trả lời:
3x-35=-14+7x
<=>3x-35+14-7x=0
<=> -4x-21=0
<=> x = -21/4
hok tốt !
^_^
Ta có : 3x - 35 = -14 + 7x
<=>3x - 35 -7x = -14
<=> -3x - 7x = -14 + 35
<=> -4x = 21
<=> x = \(-\frac{21}{4}\)
Vậy x = \(-\frac{21}{4}\)
Tìm x :
\(3x-35=-14+7x\)
\(\Rightarrow3x-7x=\left(-14\right)+35\)
\(\Rightarrow-4x=21\)
\(\Rightarrow x=\frac{-21}{4}\)
~ Học tốt ~
Bài làm
3x + 35 = -14 + 7x
<=> 3x - 7x = -14 + 35
<=> -4x = 21
<=> x = 21 : ( - 4 )
<=> x = -5,25
3x-35=-14+7x = 7x-3x=-35+14
=>4x=-21
=>x=-21
4
Vậy x=-21
4
3x-35=-14+7x
3x-7x=-14+35
-4x=21
x=\(-\frac{21}{4}\)
Trả lời :
3x - 35 = - 14 + 7x
- 35 + 14 = 7x - 3x
- 21 = 4x
4x = - 21
x = - 21 / 4
vậy x = - 21 / 4