Answer:

Step-by-step explanation:
<u>-x + 4 equals </u><u>0</u><u>.</u>
<u />
<u>Substitute 4 for x:</u>
<u />
<u>Simplify:</u>
<u />

3 and 3/4lb=20.25
what you should do is divide both sides by 3 and 3/4 but that isnt nice
convert 3 and 3/4 to improper
3 and 3/4=3+3/4=12/4+3/4=15/4
15/4lb=20.25
times 4/15 to both sides (15/4 times 4/15=60/60=1)
1lb=81/15
1lb=5.4
answer is
1lb=$5.40
The equation is 138=300-3x
now solve by first subtracting 300 from each side: -162=-3x
divide each side by -3: x=54
The wise man is 54 years old
The answer is 7.5 I’m pretty sure
8-9y=35
1. Subtract 8 from 35
35-8 = 27
2. divide -9y = 27
-9y = 27
-9y -9
3. Y= -3