+0  
 
0
399
1
avatar

2x=10-y y-x=-2

Guest Nov 10, 2014

Best Answer 

 #1
avatar+17746 
+5

2x  =  10 - y

y - x  =  -2     --->   (solve for y)   --->   y  =  x - 2

Replace this into the other equation:  2x  =  10 - (x - 2)

                (distribute)                           2x  =  10 - x + 2 

                (add x to both sides)            3x  =  12

                (divide by 3)                           x  =  4

Replace this into the equation  y  =  x - 2     --->     y  =  4 - 2     --->     y  =  2

geno3141  Nov 12, 2014
 #1
avatar+17746 
+5
Best Answer

2x  =  10 - y

y - x  =  -2     --->   (solve for y)   --->   y  =  x - 2

Replace this into the other equation:  2x  =  10 - (x - 2)

                (distribute)                           2x  =  10 - x + 2 

                (add x to both sides)            3x  =  12

                (divide by 3)                           x  =  4

Replace this into the equation  y  =  x - 2     --->     y  =  4 - 2     --->     y  =  2

geno3141  Nov 12, 2014

15 Online Users

avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.