I need help on finding an easy way of solving equations....for example

3(n + 5) = 2 (n-1)

3( 1/2 x-4)= 2 + 1/2(x+1)

2/3x+1=1/2x-3/4

4.1x +7.8 = 8.62

Results 1 to 3 of 3

- September 22nd 2009, 11:24 AM #1

- Joined
- Apr 2008
- Posts
- 73

- September 22nd 2009, 01:15 PM #2

- Joined
- Sep 2009
- Posts
- 34

3(n + 5) = 2 (n-1)

Firstly you get rid of the bracets

so 3n + 15 = 2n-2

Then you bring all the terms with n on one side and all the other numbers on the other side is

3n + -2n = -15-2

n = -17

3( 1/2 x-4)= 2 + 1/2(x+1)

same rule applies as above

so 3/2x - 12 = 2+ 1/2x + 1/2

3/2x-1/2x = 12 + 1/2

x = 25/2

2/3x+1=1/2x-3/4

2/3x-1/2x = -1-3/4

1/6x = -7/4

x = -21/2

4.1x +7.8 = 8.62

4.1x = 8.62-7.8

4.1x = 0.82

x= 0.2

- September 23rd 2009, 05:33 AM #3

- Joined
- Mar 2007
- Posts
- 1,240

There is no secret "easy way" for solving linear equations. Just use

**the regular methods**, and practice a lot.