[MOVED] solving linear equations: 5(x + 2) = 20, etc

Petrice

New member
Joined
Sep 27, 2006
Messages
1
1) 5(x + 2) = 20

2) 3(y - 9) = 30

3) 8(2c - 1) = 56

please show me how to do these
 

stapel

Super Moderator
Staff member
Joined
Feb 4, 2004
Messages
15,943
Do you know how to solve "5x = 25"? Do you know how to solve "x + 3 = -2"?

Thank you.

Eliz.
 

humakhan

Junior Member
Joined
May 19, 2005
Messages
182
THAT IS EASY
1) 5(x + 2) = 20

2) 3(y - 9) = 30

3) 8(2c - 1) = 56
three of them are seperate problems right
1) 5x + 10 = 20
2) 3y - 27 = 30
3) 16c - 8 = 56

now just subtract the number from both sides ...which has an add sign next to it
and add the number to both sides .....which has the subtract sign next to it
after that you'll have : a number next to the letter = the number...so divide the NumberLetter with tthe NUMBER..and get the letters value..
easy as that.
 
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