Question

how many equation are required for elimination of one variable​

Answer 1

Step-by-step explanation:

=>When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable.

We can eliminate the x-variable by addition of the two equations. The solution of the linear system is (0, 2).

Answer 2

Step-by-step explanation:

When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable. We can eliminate the x-variable by addition of the two equations. The solution of the linear system is (0, 2).