Asked by Hannah
Solve the System of Equation using substitution or elimination. x+2y=7 and -x+y=2
Answers
Answered by
oobleck
eq#2 says y = x+2
use that in eq#1 to get
x+2(x+2) = 7
now finish it off
or, just add the two equations to eliminate x:
3y = 9
use that in eq#1 to get
x+2(x+2) = 7
now finish it off
or, just add the two equations to eliminate x:
3y = 9
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