 Solving Equations - XP Math - Forums Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment  XP Math - Forums Solving Equations 10-11-2010 #1 Alize'Quinones   Join Date: Oct 2010 Posts: 1 Solving Equations Hey everybody, I need some help with the following equations: -g + b =y solve for b a/b = c solve for a x/y = z solve for x x/y + k = p solve for x xyz = m solve for y c = 5p + 215 solve for p 0.4x - 0.2 = 1 - Please and thank you for the help.  10-22-2010   #2
MAS1   Join Date: Dec 2008
Posts: 249 Quote:
 Originally Posted by Alize'Quinones Hey everybody, I need some help with the following equations: -g + b =y solve for b a/b = c solve for a x/y = z solve for x x/y + k = p solve for x xyz = m solve for y c = 5p + 215 solve for p 0.4x - 0.2 = 1 - Please and thank you for the help.
1. -g + b = y
-g + g + b = y + g
0 + b = y + g
b = y + g

2. a/b = c
b(a/b) = bc
(b/b)(a) = bc
1(a) = bc
a = bc

3. Same as number 2.

4. x/y + k = p
x/y + k - k = p - k
x/y + 0 = p - k
x/y = p - k
y(x/y) = y(p - k)
(y/y)(x) = y(p - k)
1(x) = y(p - k)
x = y(p - k)

5. xyz = m
yxz = m
(yxz)/(xz) = m/(xz)
y = m/(xz)

6. c = 5p + 215
c - 215 = 5p + 215 - 215
c - 215 = 5p + 0
c - 215 = 5p
(c - 215)/5 = 5p/5
(c - 215)/5 = p

7. 0.4x - 0.2 = 1
0.4x - 0.2 + 0.2 = 1 + 0.2
0.4x + 0 = 1.02
0.4x = 1.02
0.4x/0.4 = 1.02/4
x = 0.255 Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
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