Question

Solve by elimination.

X + y =4
3x + 3y =12

Answer 1

Infinite solutions

Explanation:

X + y =4

3x + 3y =12

Multiply the first equation by -3 to eliminate x

-3(X + y =4)

-3x-3y =-12

Now add this to the second equation

-3x-3y =-12

3x + 3y =12

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0=0

This is always true. That means there are infinite solutions.