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

Multiply the top equation by 3

Step-by-step explanation:

(A) Multiply the top equation by 3

Step-by-step explanation:

The given equations are:

                            (1)

and                     (2)

Now, multiplying equation (1) by 3, we get

Also, adding the above equation with equation (2), we get

⇒

⇒

Thus, on multiplying the top equation by 3, we can eliminate y easily.

Hence, option (a) is correct.

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.