Answer:
-5
Step-by-step explanation:
When you subtract a negative you end up adding it instead
Explicación paso a paso:
a+b=16 +
a-b=-4
----------
2a=12
a=6
b=10
el menor vale 6
<h2>y porfavor branliest! :)</h2>
1) a.30
3) complementary: 12 and 78
supplementary: 102 and 78
Answer:
(3) Diagonals are perpendicular
Step-by-step explanation: