Step-by-step explanation:
9x+79+56=180(sum of angles of triangle)
9x+135=180
9x=180-135
x=45÷9
x=5
Answer:
12, 2
Step-by-step explanation:
The answer is D. When Sam lost five points it is -5, but then he gained five points +5.
Answer:
42
Step-by-step explanation:
3 x 7 x 2 =
= 21 x 2
= 42