need help with substition

[jus4shw]

hey guys, i really need help. the promblem is 125x+225y=76125. I need to use the substition method to solve for X. I know the answer is x=441-y but how do you get it, i don't understand~!!!!


Thanks in advance

 

[pka]

hey guys, i really need help. the promblem is 125x+225y=76125. I need to use the substition method to solve for X. I know the answer is x=441-y but how do you get it, i don't understand~!!!!

125(441-y)+225y=76125.
Solve for y.

 

[jus4shw]

hey guys, i really need help. the promblem is 125x+225y=76125. I need to use the substition method to solve for X. I know the answer is x=441-y but how do you get it, i don't understand~!!!!

125(441-y)+225y=76125.
Solve for y.

???????????????????????????????????????????????????????????????

 

[Guest]

hey guys, i really need help. the promblem is 125x+225y=76125. I need to use the substition method to solve for X. I know the answer is x=441-y but how do you get it, i don't understand~!!!!

125(441-y)+225y=76125.
Solve for y.

???????????????????????????????????????????????????????????????

Just multiply it out and solve for y.

Hint: Distribute the 125 to what's inside the parentheses.

 

[pka]

hey guys, i really need help. the promblem is 125x+225y=76125. I need to use the substition method to solve for X. I know the answer is x=441-y but how do you get it, i don't understand.

You could note that y=441-x, so 125x+225(441-x)=76125.