# SOLUTION: Please help me with these problems: Solve each system of equations by using substitution 1. x-3y=9 x+2y=-1 2. g+3h=8 1/3g+h=9 3. 2a-4b=6 -a+2b=-3 4. 2m+n=6 5m+6n=1

Algebra ->  Algebra  -> Rational-functions -> SOLUTION: Please help me with these problems: Solve each system of equations by using substitution 1. x-3y=9 x+2y=-1 2. g+3h=8 1/3g+h=9 3. 2a-4b=6 -a+2b=-3 4. 2m+n=6 5m+6n=1       Log On

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 Algebra: Rational Functions, analyzing and graphing Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Rational-functions Question 524092: Please help me with these problems: Solve each system of equations by using substitution 1. x-3y=9 x+2y=-1 2. g+3h=8 1/3g+h=9 3. 2a-4b=6 -a+2b=-3 4. 2m+n=6 5m+6n=1 5. 4x-3y=-6 -x-2y=7Answer by lagbens(14)   (Show Source): You can put this solution on YOUR website!1.X-3Y=9 (equation 1) X+2Y=-1 (equation 2) let's solve for X in (eq.1):X=3Y+9 let's replace X's value in (eq.2):3Y+9+2y=-1(add up Y terms) 5Y+9=-1(subtract 9 from both side) 5Y=-10(divide both side by 5) Y=-2 now we got Y, just replace it in one of the 2 originals equation in order to find X. in (eq.2) we'd have X+2(-2)=-1 X-4=-1(add 4 to both side) X=3. final solution (3,-2) Follow the same steps for the rest of 'em.