what is 3y+2(-7+x)

First, we need to distribute.
2 times -7 is -14, and 2 times x is 2x, leaving us with:
3y+(-14)+x
3y-14+x

9(4m+1)

9(4m+1)

9(4m+1)

12.x=
x=1

To solve the equation 12.x = 1, we need to isolate x.

First, divide both sides of the equation by 12 to get:

x = 1/12