:confused: :confused:

Can anyone please show me the simpliest way to work out these ?

25-7a=27-4a

11-7(2-a) = 18

4

- (x+3) = 6

5

Thanks heaps :)

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- Jun 15th 2007, 06:12 PMchhoeukAlgebra Help Needed
:confused: :confused:

Can anyone please show me the simpliest way to work out these ?

25-7a=27-4a

11-7(2-a) = 18

4

- (x+3) = 6

5

Thanks heaps :) - Jun 15th 2007, 06:23 PMJhevon
we want to solve for , so our objective is to get by itself on one side of the equal sign.

.......let's get all 's on the left

........i added 4a to both sides

.......i subtracted 25 from both sides

.........i computed both sides

........i divided both sides by -3

Quote:

11-7(2-a) = 18

........now clean things up a bit

..........now add 3 to both sides

................now divide both sides by 7

Quote:

4

- (x+3) = 6

5

......again, expand the brackets first

can you take it from here? remember, your objective is to get x on one side by itself, anything else on that side, we get rid of it by adding, subtracting or dividing both sided by it