Answer:
2/7
Step-by-step explanation:
set the equation as 3/7-1/7
by adding a negative to a positive you're subtracting
adding a negative is the same thing thing as subtracting a positive
so
3/7 + (-1/7) = 3/7 - 1/7 = 2/7
D
7.3+(-7.3)
hope that help
a=6
2a-8a=12-8a
8a+2a-8a=12
2a=12
a=12 over 2
