# algebra

posted by .

solve by the elimination method

3r - 7s =-29
7r + 3s = 29

What is the solution of the system?
Type an ordered pair. Type an interger or a fraction or type N if there is no solution or type 1 if there are infinitely many solutions.

• algebra -

This can be solved as there are two unknowns and two equations.

I would multiply the top by 3 and the bottom by 7 and then add the two equations together.

9r-21s=87
49r+21s=203
58r=290

r=5

subsiitute in the first equation

15-7s=29

7s=-14 so s=-2

## Similar Questions

Solve the system of equations by graphing then classify the system as consistent and the equation as dependent or independent. 4x-y=26 4x+5y=-10 What is the solution of the system of Equations?
2. ### Algebra

Solve by the elimination method. 5r-7s=-37 7r+5s=37 What is the solution of the system?
3. ### Math

Solve by the elimination method. 4x +5y=1 8x +10y=2 What is the solution of the system?
4. ### Math

solve by the elimination method. what is the solution of the system?
5. ### Algebra

Solve by substitution method. 6x+9y=-12 -5x+y=27 What is the solution of the system?
6. ### math

Solve the system of equations by graphing. Then classify the system?
7. ### math

Solve the system of equations by graphing. Then Classify the system?
8. ### math

Solve the system by graphing. Then classify the system.?
9. ### algebra

solve by elimination method what is the solution of the system?
10. ### Algebra

Solve the following system of equations by the elimination method. 1/3x+1/4y=7 1/3x-3/4y=-9 a)The solution is___?

More Similar Questions