Asked by Anonymous
determine the resulting equation if one variable is solved in terms of the other variable in one equation and substitute this variable in the other equation.
1.) 2x+5y=9
-x+y=2
2.) 3x+y=2
9x+2y=7
3.) x-y=-3
3x +y=19
1.) 2x+5y=9
-x+y=2
2.) 3x+y=2
9x+2y=7
3.) x-y=-3
3x +y=19
Answers
Answered by
Steve
#1 We see that x = y-2, so
2(y-2)+5y = 9
Do the others in like wise.
2(y-2)+5y = 9
Do the others in like wise.
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