1) 8x - 5x = 15
2) -3(-x + 4) = -9
3) 2(4x + 3) - 9 = 45
4) 6x - 4(2x + 8) = 16
5) -5x + 4(2x - 2) = 1
6) 2(2x - 4) + 3x = -1
7) -3 + 5x = 12
8) 2 - 5/6x = -8
9) 2/3x = 12
2007-06-22 09:58:57 · 8 answers · asked by Jewman 1 in Science & Mathematics ➔ Mathematics
what is this your algebra homework that you don't want to do on your own? Great idea! I wish I had time to answer them for you.
2007-06-22 10:02:47 · answer #1 · answered by xsteelnuttzx 2 · 1⤊ 2⤋
In all the single variable problems all you have to do is group all the 'x' together and all the constants together and use regular algebra. For example, in the 1st problem
8x-5x = 15
(8-5)x = 15
3x = 15
x = 15/3 = 5
Another example, in problem 5
-5x + 4(2x - 2) = 1
-5x + 4(2x) - 4 (2) = 1
-5x + 8x -8 = 1
(-5 + 8)x = 1 + 8
3x = 9
x = 3
Similarly solve all the other problems.
2007-06-22 10:06:58 · answer #2 · answered by Mickey 1 · 1⤊ 1⤋
1. x=5
2. x=1
3. x=6
4. x=8
5. x=3
6. x=1
7. x=3
8. x=-5
9. x=8
2007-06-22 10:09:57 · answer #3 · answered by Andrea 4 · 0⤊ 1⤋
These are quite simple.
1) 8x - 5x = 15 -------> add 8x and 5x
3x = 15 --------> divide 15 by three
x = 5
Now just apply the same concept to all of them. Remember PEMDAS to do things in the right order.
p = parentheses
e = exponents
m = multiplication
d = division
a = addition
s = subtraction
2007-06-22 10:03:23 · answer #4 · answered by Lady Geologist 7 · 1⤊ 1⤋
the first one is 5
2007-06-22 10:01:57 · answer #5 · answered by Anonymous · 0⤊ 1⤋
1:5
2:1
3:6
4:-24
5:3
6:1
7:3
8:12
9: 18
2007-06-22 13:34:45 · answer #6 · answered by UNIQUE 3 · 0⤊ 0⤋
Read this:
http://www.algebrahelp.com/lessons/equationbasics/
2007-06-22 10:03:58 · answer #7 · answered by Anonymous · 0⤊ 1⤋
1) = 5
theres a start
2007-06-22 10:04:08 · answer #8 · answered by Anonymous · 0⤊ 1⤋