Step-by-step explanation:
180= 90+30+20x 90+30=120 180-120= 60
20x=60 x=3
-8/5 is a rational number because in order to be a rational number it must be able to be written as a fraction. -8/5 is a fraction; therefore, the negative does not affect it.
Answer:
The answer you are looking for is the part d
Answer:
x=1
y=3
z=-2
Step-by-step explanation:
Use substitution to solve two systems and then the third.
Answer:
A B D
Step-by-step explanation:
