Posted by **Me** on Monday, February 19, 2007 at 9:45pm.

2) subtract the two equations to erase the y value (since 2y-2y=0) and solve for x, then add them to erase the x value (since -3x+3x=0) and solve for y. ur x values should be -8.5 and 7.5 respectively. i dont know how to do #1

step by srep the problems

1) x+ y=13

22x + 36y =356

2)-3x +2y=8

3x + 2y=8

#1 use substitution. subsitute y with y=13-X, and solve for x.

22X+36(13-X)=356

-14X=-112

x=8

8+y=13

y=5

## Answer This Question

## Related Questions

- Algebra - I am re posting this for fear that it was overlooked earlier. I have ...
- Math - Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 ...
- algebra 2 - solve: 3+|2y-1|>1 graph the solution set on a number line. ...
- algebra - how would i find an equation of a line that goes through points(1,6) ...
- Int Algebra - The difference of two numbers is 7. The sum of the numbers is -1. ...
- algebra - I need a step by step explanation on how to add these two equations 2x...
- math - Roberto's scout troop is making some birdhouses for the park district. ...
- Substitution Method - Use the Substitution method to solve the system of ...
- Document and Visual Design - Question 30 Which traditional visual aids combine ...
- algebra 1 - I'm stuck on this problem. Can you help? -4x-9y=1 -x + 2y =-4 WHat ...

More Related Questions