Answer: 28
Step-by-step explanation:
Put the negative exponent as the denominator in a fraction, so you'd get -7/1
I would say the third one would be the correct or the second one
Answer:
x=1 y=2
Step-by-step explanation:
Isolate x for 4x -y=2: X=2+y/4
Substitute x= 2+y/4
(2+y/4 )+3y=7
simplify 2+13y/4=7
Isolate y for 2+13y/4=7
y=2
Forx= 2+y/4
Substitute y = 2
x= 2+2/4
Simplify
X=1
