Question

What should be the first step in adding these equation to eliminate y 12x - 2y = -1 + 4x + 6y =-4

Answer 1

Answer:

See below

Step-by-step explanation:

Assumed you need to solve the system:

• 12x - 2y = - 1
• 4x + 6y = - 4

In order to solve this by elimination, triple the first equation and add the second one.

It will make the coefficients of y same with opposite signs:

• -6y and 6y

When added together these cancel, leaving x as the only variable.