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This is my equation:
3x - 7y = 2
2x - 3y = 3
I need to use elimination, please help.
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3x - 7y = 2, (1)
2x - 3y = 3. (2)
Multiply eq.(1) by 3 (both sides) and multiply eq.(2) by 7. You will get
9x - 21y = 6, (3)
14x - 21y = 21. (4)
Now distract eq.(3) from eq.(4). The terms with "y" will canceled (eliminated), and you will get a single equation for "x":
14x - 9x = 21 - 6, or
5x = 15 ---> x = = 3.
From this point, please complete the solution on your own.
On the Substitution method, Elimination method, Determinants' method for solving the systems of two linear equations in two unknowns see the lessons
- Solution of the linear system of two equations in two unknowns using determinant
- Solution of the linear system of two equations in two unknowns by the Substitution method
- Solution of the linear system of two equations in two unknowns by the Elimination method
- Geometric interpretation of the linear system of two equations in two unknowns
in this site.