Answer:
x = m - z
Step-by-step explanation:
z = m - x
Add x to both sides.
x + z = m
Subtract z from both sides.
-18x square y -+36xy square + 54 xy - 1
collect the terms, calculate the product, collect the terms, then distribute
x/-2=-5
-x=-10
x=10
.. ..
this is the answer key for that question and etc...
