equations

[s creps]

(c+2) +8 =4 i cannot work this out...HELP!!!!!

[RedSon]

(c+2) +8 =4 i cannot work this out...HELP!!!!!

You can't solve for c in this equation?

How do you solve this:

c + 2 + 8 -4 = 0?

[MMcCarthy]

(c+2) +8 =4 i cannot work this out...HELP!!!!!

As RedSon says you can simply move the 4 to the left and make it negative. The brackets in this case won't have any effect as all the operators are + or - and so precedence has no meaning.

[RedSon]

As RedSon says you can simply move the 4 to the left and make it negative. The brackets in this case won't have any effect as all the operators are + or - and so precedence has no meaning.

Here is a tough question, how do you solve this?

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2]

zOMG!

[mrnn]

Here is a tough question, how do you solve this?

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2]

zOMG!

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2]

parenthesis first

4 + [ -3 + 17 ] = 15 - [ 2 + 5 + 2 ]

now the brackets

4 + 14 = 15 - 9

now the basic math

18 = 6

......hmmmm.... .......that could be a problem.....

[MMcCarthy]

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2]

parenthesis first

4 + [ -3 + 17 ] = 15 - [ 2 + 5 + 2 ]

now the brackets

4 + 14 = 15 - 9

now the basic math

18 = 6

......hmmmm.... .......that could be a problem.....

LOL!

Oops, RedSon can't add ....

and I'm sorry yes, parenthesis do count :)

[RedSon]

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2]

parenthesis first

4 + [ -3 + 17 ] = 15 - [ 2 + 5 + 2 ]

now the brackets

4 + 14 = 15 - 9

now the basic math

18 = 6

......hmmmm.... .......that could be a problem.....

Duh I forgot to add the unknown quantity into my equation ROFL!!

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x

There that should be solveable.

[MMcCarthy]

Duh I forgot to add the unknown quantity into my equation ROFL!!

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x

There that should be solveable.

If you don't ignore parenthesis

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x

4 + [-3+17] = 15 - [2 + 5 + 2] + x
4 + 14 = 15 - 9 + x
18 = 6 + x
18 - 6 = x
12 = x

However, if you do ignore parenthesis (which is wrong)

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x
4 + 6 - 9 + 8 + 9 = 15 - 2 + 3 - 6 + 8 + 2 + x
18 = 20 + x
18 - 20 = x
-2 = x

My algebra tutor would be horrified :D

[RedSon]

If you don't ignore parenthesis

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x

4 + [-3+17] = 15 - [2 + 5 + 2] + x
4 + 14 = 15 - 9 + x
18 = 6 + x
18 - 6 = x
12 = x

However, if you do ignore parenthesis (which is wrong)

4 + [( 6 - 9 ) + (8 + 9)] = 15 - [2 + ( 3 - 6 + 8 ) + 2] + x
4 + 6 - 9 + 8 + 9 = 15 - 2 + 3 - 6 + 8 + 2 + x
18 = 20 + x
18 - 20 = x
-2 = x

My algebra tutor would be horrified :D

Don't feel bad Mary, in a simple equation like (2 + 5) - c = 8, parenthesis don't matter, well, they do but they are irrelevant in this case. So I can understand your tendency to say that for an equation where all the operators have the same order of precedence it doesn't matter.