What is the value of the expression 2w-2 when w=5

The answer is 8 because you have to replace w with 5 and then multiply 2×5 which is 10 and then subtract 10-2 which is 8

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this