Question

Using the properties of equality to solve the equation -2b + 7 = -13, you would _____.

add 13 and then divide by -2
add 13 and then add 2
subtract 7 and then add 2
subtract 7 and then divide by -2

Answer 1

Follow PEMDAS in reverse. So you would start off undoing the +7. Which means you subtract 7 from both sides

Then undo the -2 multiplying with the b. So you divide both sides by -2

The final answer is therefore D) subtract 7 and then divide by -2