SOLUTION: Am having trouble when I have to multiply the whole numbers by the fraactons during some steps that are required to get the values for x and y. the problem looks something like t

Algebra ->  Expressions-with-variables -> SOLUTION: Am having trouble when I have to multiply the whole numbers by the fraactons during some steps that are required to get the values for x and y. the problem looks something like t      Log On


   

Question 137208This question is from textbook Algebra 1
: Am having trouble when I have to multiply the whole numbers by the fraactons during some steps that are required to get the values for x and y.
the problem looks something like this
-2x-5y=7
7x+y=-8 This question is from textbook Algebra 1

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
try substitution instead of elimination

subtracting 7x from second equation __ y=-7x-8

substituting __ -2x-5(-7x-8)=7 __ -2x+35x+40=7 __ 33x=-33 __ x=-1

substituting __ -2(-1)-5y=7 __ 2-5y=7 __ -5y=5 __ y=-1