Will give out Brainliest, aTHX, a friend request, and will rate ur answer And don't just answer to get 5 little simple points!
THX

a. -1

b. 8

c. 3

Step-by-step explanation:

a.

6-7

(factor out the negative sign)

-(7-6)

(calculate)

-1

(your answer)

b.

6-(-2)

(remove the parentheses)

6+2

(calculate)

8

(your answer)

c.

6-3=3

understand that i don't know the answers

will someone answer his question

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: