Answer:
Read below
Step-by-step explanation:
a) 
b)
(The reason both numerator and denominator can both be negative is because the negative cancel each other out and still simplify to
)
Answer: -6 3/4
Short explained no step by step
Answer:
Step-by-step explanation:
2x+4 = 7x-1
4+1 = 7x - 2x
5 = 5x
x = 5/5
x = 1
hope this helps
I would believe it is D because if you do the equation and work it out you would get 2
$83.4
because 30%=0.3
0.3•$278= $83.4