Ok so I just need help with this one so I can see how to do the rest of them.
Simplify
4[2x-(3-5x)] + 3[3x-(4+x)]
And do it step by step so I can see the steps to simplifying an equation like this ty.
2007-09-06 15:05:13 · 6 answers · asked by JunkYardPuppy 2 in Science & Mathematics ➔ Mathematics
Thankyou, you guys are great.
2007-09-06 15:16:10 · update #1
4[2x-3+5x] + 3[3x-4-x] (Distribute the sign)
4[7x-3] + 3[2x-4] (Combine like terms in the brackets)
28x-12 + 6x-12 (Distribute the numbers in front)
34x - 24 (Combine like terms again)
2007-09-06 15:12:23 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Normal brackets first, then square brackets :) Remember multiplication sign rules (2 same = positive, one of each = negative)
4[2x-(3-5x)] + 3[3x-(4+x)]
= 4[2x-3+5x] +3[3x-4-x]
= 4[7x-3] +3[2x-4] -- tidy up inside the brackets
= 28x -12 +6x -12 -- multiply out the brackets
= 34x -24 -- collect like terms :)
I guess you could make this 2(17x-12) but I don't really see why (depends what you're doing with it - if nothing, leave it as 34x -24)
(Please properly go through my working in case I made an error. My method is ok, but it's 3am. I have double-checked it for you, though! :P)
2007-09-06 22:14:18 · answer #2 · answered by Anonymous · 0⤊ 1⤋
4[2x-(3-5x)] + 3[3x-(4+x)] First step is to simplify the ( ) by multiplying the - in front of it which is actually a -1 which gives you. Do inner most parentheses first and work your way out.
Try rewriting it if it helps.
4[2x-1(3-5x)] + 3[3x-1(4+x)] ----Distribute the -1 inside ( )
4[2x -3 +5x] + 3[3x -4-x]------Now simplify inside [ ]
4[7x - 3] + 3[2x -4]-------------Now distribute the 4 & 3 inside [ ]
28x-12 +6x -12 ----------------Now combine like terms: +28x, +6x and -12, -12
34x -24
2007-09-06 22:17:10 · answer #3 · answered by USMCBabydoll 2 · 0⤊ 1⤋
*work inside out. get rid of the parenthesis first:
4[2x-(3-5x)] + 3[3x-(4+x)]
if it is easier for you, do the right side first then the left.
4[2x-3+5x] + 3[3x - 4 - x]
then combine like terms.
4[7x-3] + 3[2x-4]
and solve by distributing.
28x -12 + 6x - 12
solve by combinig like terms.
34x-24
your answer is 34x-24.
2007-09-06 22:23:22 · answer #4 · answered by Bloom 2 · 0⤊ 2⤋
4*2x - 4*3 + 4 * 5x + 3*3x - 3*4 - 3x
= 8x -12 +20x +9x -12 -3x
=34x -24 = 2(17x - 12)
2007-09-06 22:17:34 · answer #5 · answered by Beardo 7 · 0⤊ 2⤋
4[2x-3+5x]+3[3x-4-x]
=4[7x-3]+3[2x-4]
=28x-12+6x-12
=34x
2007-09-06 22:11:49 · answer #6 · answered by kamal 1 · 0⤊ 3⤋