Shawnee is solving the equation x/7 - 4 = -6. One of her steps is to multiply both sides of the equation by 7. Why?
Multiplying both sides by 7 undoes the addition in the original problem
The negative sign in -6 must be changed to positive
Multiplying both sides by 7 undoes the subtraction in the original problem
Multiplying both sides by 7 undoes the division of x by 7 in the original problem