18÷3(5-4+1) =?? 3 or 12 how ?!
2 answers:
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Answer:
45 students speak Spanish at Francis Lewis High School
Step-by-step explanation:
Option1:
18000 = 400x
x = 45 students speak Spanish at Francis Lewis High School
Option2:
72 ÷ 400 = 0.18
0.18 * 250 = 45 students speak Spanish at Francis Lewis High School
Given:
To find:
The simplified rational expression by subtraction.
Solution:
Let us factor . It can be written as
.
using algebraic identity.
LCM of
Make the denominators same using LCM.
Multiply and divide the first term by (x + 1) to make the denominator same.
Now, denominators are same, you can subtract the fractions.
Expand .