Question

A student is trying to solve the system of two equations given below:

Equation P: y + z = 6
Equation Q: 8y + 7z = 1

Which of the following is a possible step used in eliminating the y-term?

(y + z = 6) ⋅ −8

(y + z = 6) ⋅ 7

(8y + 7z = 1) ⋅ 7

(8y + 7z = 1) ⋅ 8
Please helppppp!!

Answer 1

the first one

Answer 2

yea the first answer lets you add the two equations in the problem to eliminate the y variable. Then you only have one variable to solve for.

Answer 3

thanks guys :)