5(2-x)+3x+3=3 Can't get answer!!!

sandradot

New member
Joined
Nov 14, 2007
Messages
1
Am very frustrated, used to be good in math 2 decades ago!!
5(2-x)+3x+3=3 Even our math tutor can't get this WHY??!?!?

Also, which program would anyone recommend purchasing for algebra help?
Had no idea there were so many to choos from. Thanks in advance for any help!
 

arthur ohlsten

Full Member
Joined
Feb 20, 2005
Messages
854
5[2-x]+3x+3=3
clear the bracket
10-5x+3x+3=3
combine likes
13-2x=3
subtract 3 from each side
10-2x=0
add 2x to each side
10=2x
divide both sides by 2
5=x answer
===========================================
proof
let x=5
5[2-5]+3[5]+3 =? 3
5[-3]+15+3 =? 3
-15+15+3=?3
3=?3 yes

Arthur
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,467
> Am very frustrated, used to be good in math 2 decades ago!!
> 5(2-x)+3x+3=3 Even our math tutor can't get this WHY??!?!?

5(2 - x) means multiply what's inside brackets by what's outside;
so 5*2 - 5*x = 10 - 5x

If your math tutor can't solve something so basic, then he/she should be fired!
 

jwpaine

Full Member
Joined
Mar 10, 2007
Messages
723
sandradot said:
Also, which program would anyone recommend purchasing for algebra help?Had no idea there were so many to choose from.
At your level, I recommend a good teacher and a simple calculator

Best of luck in your learnings!
John
 
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