Question

The key to using the elimination method is to find variable terms in the two equations that have unequal coefficients.

A. True
B. False​

Answer 1

Answer: B) False

Detailed Explanation:

We need to find the variables having equal coefficients or make the coefficients of some variable equal because we will be able to eliminate a variable. For eg. take the following pair of linear equations.

=> x + y = 14 (Eq. 1)
=> x - y = 4 (Eq. 2)

As we see, the coefficients of x and y are same but in y, the coefficients are +1 and -1 which can be easily cancelled while adding the equations. This will eliminate the variable y. So, we can find the value of x and then substitute it in any equation to find the value of y.

Answer 2

A.true



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