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We have a + b = 180 and a = 12 + b;
Then, 12 + b + b = 180;
12 + 2b = 180;
2b = 168;
b = 84;
a = 12 + 84;
a = 96;
9.3 repeating is the answer.
Answer:
x=-16
Step-by-step explanation:
y=-20
y=x-4
-20=x-4
x=-16
