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i take it this is a system of equation?

the 2nd equation is easier to "solve for y"

y = -4x + 25 (from teh second equation)
-x + 3(-4x+25) = 10 (solve for x)

-x -12x +75 = 10
75-10 = x+12x
65 = 13x
65/13 = x .... if I did it right :)

i got x= 5/3 and y =6 1/4

mit; whats your substitution for "y"; your y=equation?

Thanks

dian; does what I did make sense to you?

i isolate y in te second equation , then plugged tto the first eqution to solve for x

mit; what did you get for your y= equation?

Im off ; i got y= 25 /4x

mit; that would be in error
work it out step by step for me please

ok

4x+y=25 ... what do we do first?

we have "addition" involved; how do we get rid of a term that is held on by "addition"?

4x + y=25
4x+y/4x=25/4x, so I plug it to the first equ.
-x +3(25/4x)=10

:) yes dian

4 + 6 = 10
6 does NOT equal 10/4 do you see that?
4 + 6 = 10
4-4 + 6 = 10 - 4
0 + 6 = 10 - 4
6 = 6

yeah I get it, so how do you solve it?

yes

so the value of "y" = 25 - 4x correct?

yes sir

i get x = 10/ 87 , that s not right is it?

i dont know, which method do we choose

yeah

when im wrong tell me :)

LOL, i was gunna point it out

-13x/-13 of course is what i meant lol... my keyboard hates me :)

OK Now I got it,,

we now know that y = 5 and x = 5 is the solution to this system of equations :) TADA!!!

cool beans