SOLUTION: is this correct or incorrect -2(a-3)=6 -2a-6=6 please solve and show work. 5-3(2b-3)=-4 please write a formula. find three consecutive numbers whose sum is 72. thank

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Question 390162: is this correct or incorrect
-2(a-3)=6
-2a-6=6
please solve and show work.
5-3(2b-3)=-4
please write a formula.
find three consecutive numbers whose sum is 72.
thanks for your help.
Found 2 solutions by jim_thompson5910, mananth:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
I'll do the first one to get you started.


Start with the given equation.


Distribute. (note: this is where you made a mistake)


Subtract from both sides.


Combine like terms on the right side.


Divide both sides by to isolate .


Reduce.


----------------------------------------------------------------------

Answer:

So the solution is


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim
Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
-2(a-3)=6
-2a+6=6
add -6 to both sides
-2a+6-6=6-6
-2a=0
a=0

please solve and show work.
5-3(2b-3)=-4
5-6b+9=-4
-6b+14=-4
add -14 to both side
-6b+14-14=-4-14
-6b=-18
/-6
-6b/-6=-18/-6
b=3
please write a formula.
find three consecutive numbers whose sum is 72.
let the numbers be x, x+1,x+2
...
x+x+1+x+2=72
3x+3=72
add -3 to both sides
3x=72-3
3x=69
/3
x=69/3
x=23
23,24,25
...
m.ananth@hotmail.ca
thanks for your help.
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