Here is the problem.
8d - ( - 7c - 2d ) = ( 8d - (- 2d ) ) - ( - 7c )
= 8d + 2d - ( -7c )
= 10d - ( - 7c )
= 10d + 7c
Did I work this correctly? I am not sure if I worked the sign changes the right way. Any input would be appreciated.
2007-10-07 05:14:34 · 7 answers · asked by Worldly scholar 1 in Science & Mathematics ➔ Mathematics
yes, you did this correctly. there is a quicker way to do it though.
8d - ( - 7c - 2d ) .... distribute the negative sign to the parenthesis first to get
8d + 7c + 2d (negative times negative makes positive)
then combine for 10d + 7c .
A lot quicker, right?
2007-10-07 05:19:34 · answer #1 · answered by prb04 2 · 1⤊ 0⤋
Ans. 8d-(-7c-2d)
=8d+7c+2d
=10d+7c.
2007-10-07 12:53:25 · answer #2 · answered by Sasi Kumar 4 · 0⤊ 0⤋
no the right way is:
8d-(-7c-2d)
8d(7c+2d) distribute your negative sign
56cd+16d2 <16d squared> multiply 8d to everything in the ( )
2007-10-07 12:20:41 · answer #3 · answered by cutie4rm305 2 · 0⤊ 0⤋
8d + 7c + 2d
10d + 7c
2007-10-07 14:47:30 · answer #4 · answered by Como 7 · 1⤊ 0⤋
Yes.
2007-10-07 12:18:29 · answer #5 · answered by LucaPacioli1492 7 · 0⤊ 0⤋
Yep, thats it in a nutshell
2007-10-07 12:19:26 · answer #6 · answered by Iorek 1 · 0⤊ 0⤋
http://messenger.providesupport.com/messenger/stepsedu.html?ps_s=VVqs9UEGeyor&ps_mht=true
2007-10-07 12:20:37 · answer #7 · answered by Amit S 1 · 0⤊ 0⤋