Question 1 Draw diagonals AC and BDon parallelogram ABCD. Make a point where the diagonals intersect, and label it E. Measure and record the lengths of
the four line segments you just created

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

15 cm is the answer to your question

This is the answer check it out