Posted by cupnnas2002 on Friday, October 14, 2011 at 11:03pm.
solve the equation for y
4y+5x= 7
I came up with this is, is it right?
y=5x/4+4

algebra  sammie, Friday, October 14, 2011 at 11:10pm
x+15=85

algebra  robby, Friday, October 14, 2011 at 11:17pm
x + 15 = 85
 15 15 (subtract 15 from both sides of equation to get x alone and keep equation equal.)
x=70

algebra  robby, Friday, October 14, 2011 at 11:25pm
4y + 5x = 7
divide everything by 4 to get y alone
4y/4 + 5x/4 = 7/4
y + 5x/4 = 7/4
subtract 5x/4 from both sides of equation
y +5x/4 = 7/4
5x/4 5x4
________________
y = 5x 7 / 4
5x  7
___________
4
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