Let's first solve the equation:
(120 + 80) - z = 5200 - z = 5-z = 50 - 20-z = -15z = 150
Now let's solve the second equation:
60 - (30 + 1560 - 45 = 15
Therefore, z = 150 and the second equation equals 15.
Let's first solve the equation:
(120 + 80) - z = 5
200 - z = 5
-z = 50 - 20
-z = -15
z = 150
Now let's solve the second equation:
60 - (30 + 15
60 - 45 = 15
Therefore, z = 150 and the second equation equals 15.