Question

Can someone please help me with these few math problems. 1) 6x-9x-4=2x-2
2) -(x-7)=6x+8
3) 3-6a=9-5a
4) -9+6=-x+4
I have alot of trouble with math plaese explain thank you!

Answer 1

1) \[6x-9x-4=2x-2\]
\[-3x-4=2x-2\]
\[-5x=2\]
\[\frac{ -5x }{ -5} = \frac{ 2 }{ -5 }\]
\[x=-\frac{ 2 }{ 5 }\]

Answer 2

-(x-7)=6x+8
multiply out the brackets so it becomes:
-x+7=6x+8
then get all the x to one side and the numbers to the other so then it becomes:
-x-6x=8-7
which then becomes:
-7x=1
then devide both sides by -7 so your answer is positive which gives you:
\[\frac{ -7x }{ -7}=\frac{ 1 }{ -7 }\]
and which finally equals:
\[x=-\frac{ 1}{ 7 }\]

Answer 3

that was 2), can you do the next two?