make you help me . 7x - 8= 713
Help me
4x :17 = 0
7x - 8 = 713
8(x - 3) = 0
* 4x : 17 = 0
4x = 0
x = 0 : 4 = 0
* 7x - 8 = 713
7x = 713 + 8
7x = 721
x = 721 : 7 = 103
* 8(x - 3) = 0
8x - 24 = 0
8x = 24
x = 24 : 8
x = 3
Nhớ k cho mình với nhá!
4x : 17 = 0
=> 4x = 0 x17 = 0
=> x = 0 : 4 = 0
7x - 8 = 713
=> 7x = 713 + 8 = 721
=> x = 103
8( x- 3 ) = 0
=> x-3 = 0 : 8 = 0
=> x = 0 + 3 = 3
\(4x:17=0\)
\(=>4x=0\)
\(=>x=0\)
\(7x-8=713\)
\(=>7x=721\)
\(=>x=103\)
\(8\left(x-3\right)=0\)
\(=>x-3=0\)
\(=>x=3\)
chuyển sang câu bị động
5 "Don't forget to make a dental appointment."
6 "Please, please help me!"
7 "You must give us a call when you get back!"
8 "I won't help you."
-7x – 8 = 713
-7x – 8 = 713
-7x = 713 + 8
-7x = 721
-> x = -103
\(-7x-8=713\)
\(-7x=713+8\)
\(-7x=721\)
\(x=721:(-7)\)
\(x=-103\)
7x - 8 = 713
7x - 8 = 713
7x = 721
x =721 : 7= 103
7x - 8 = 713
7x = 713 + 8
x = 721 : 7
x = 103
7x-8=713
7x - 8 = 713
7x - 8 = 713
7x - 8 = 713
7x = 713 + 8
7x = 721
x = 721 : 7
x = 103
7x - 8 = 713
7x = 713 + 8
7x = 721
x = 721 : 7
x = 103
7x - 8 = 713
\(7x-8=713\)
\(\Leftrightarrow7x=721\)
\(\Leftrightarrow x=103\)
7x - 8 = 713
7x = 713 + 8
7x = 721
x = 721/7
x =103
7x-8=713
7x - 8 = 713
7x = 713 + 8 = 721
7x-8=713
7x=713+8
7x=721
x=721:7
x=103