Using the substitution method, Nelly is solving the following system of equations algebraically. 2x + y = 11
x-3y = -5

What equivalent equation could Nelly use?
1) Зу - 5 - Зу = -5
2) -3y - 5 - 3y = -5
3) 2(3y - 5) + y = 11
4) 2(-3y – 5) + y = 11

Ithink the answer is b.

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this