can someone explain how to do
8x-5(2x+3)-(1-6x)= 8+(4+6x)
and
3(5x-4)-7(2x-3) = 3(x+1)+5
srry, i know its like really to you guys. but i m not as smart. soo i need your help.
thnx
2006-06-29 00:42:48 · 7 answers · asked by mooo 1 in Education & Reference ➔ Homework Help
really easy*
2006-06-29 00:45:08 · update #1
i) 8x -10x-15-1+6x = 8+4=6x
8x-6x+6x-10x = 8+4+15+1
-2x = 28
x = -14
ii) 15x-12-14x+21 = 3x+3+5
15x-3x-14x = 3+5+12-21
-2x = -1
x = 1/2
peice of cake :-)
2006-06-29 00:52:28 · answer #1 · answered by ŜΛήĵΣΣυ 2 · 0⤊ 0⤋
8x - 5(2x + 3) - (1 - 6x) = 8 + (4 + 6x)
8x - 10x - 15 - 1 + 6x = 8 + 4 + 6x
4x - 16 = 12 + 6x
4x - 6x = 12 + 16
-2x = 28
x = -14
and
3(5x - 4) - 7(2x - 3) = 3(x + 1) + 5
15x - 12 -14x +21 = 3x + 3 + 5
x + 9 = 3x +8
x - 3x = 8 - 9
-2x = -1
x = 1/2 @ 0.5
that's the answer..just hope that i got it right!
2006-06-29 01:00:59 · answer #2 · answered by Foreigner 2 · 0⤊ 0⤋
8x-5(2x+3)-(1-6x)=8+(4+6x)
8x - 10x - 15 -1+6x = 8+4+6x
-2x-16+6x = 12+6x
-2x +6x -6x = 12+16
-2x= 28
x= - 14
and
3(5x-4)-7(2x-3) = 3(x+1) +5
15x-12-14x+21 = 3x+3+5
x+9 = 3x+8
x-3x= 8-9
-2x= -9
x= -9/-2
x= 9/2
2006-06-29 00:56:26 · answer #3 · answered by flori 4 · 0⤊ 0⤋
8x-5(2x+3)-(1-6x)= 8+(4+6x)
8x-10x-15-1+6x = 12+6x
8x-10x+6x-6x = 12+15+1
-2x=28
x= -14
3(5x-4)-7(2x-3) = 3(x+1)+5
15x-12-14x+21=3x+3+5
15x-14x-3x=3+5+12-21
-2x= -1
x=1/2= 0.5
2006-06-29 04:54:01 · answer #4 · answered by gingben 4 · 0⤊ 0⤋
8x-5(2x+3)-(1-6x)= 8+(4+6x)
(-40 * 6) - (-5x) = 8 + 24x
-240 - (-5x) = 32x
-240 = 32x + +5x
-240 = 37x
-240/37= - 6.4864865
2006-06-29 01:03:19 · answer #5 · answered by Man 2 · 0⤊ 0⤋
8x-5(2x+3)-(1-6x)=8+(4+6x)
8x-10x-15-1+6x=8+4+6x
8x-10x-6x+6x=12+15+1
-2x=28
x=28/-2
x=-14
2006-06-29 03:20:55 · answer #6 · answered by chochy 1 · 0⤊ 0⤋
just visit www.mathguru.com and all your math problems are solved.... awesome site
2006-06-29 01:09:57 · answer #7 · answered by Anonymous · 0⤊ 0⤋