Answer:

Step-by-step explanation:
Express the 2 fractions with a common denominator of 21
multiply numerator/denominator of first fraction by 3
multiply numerator/denominator of second fraction by 7
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=
- 
= 
Answer:
1.8 ; - 14.7
Step-by-step explanation:
Evaluate the algebraic expression 1.5t -7.2 for each given value 6 ; -5
For each of values 6 and - 5 ;
Substitute the values for t in the expression ; 1.5t - 7.2
Substituting 6 for t:
1.5(6) - 7.2
9 - 7.2
= 1.8
Substituting -5 for t:
1.5(-5) - 7.2
-7.5 - 7.2
= - 14.7
Answer:
Step-by-step explanation:
Find attached:
For algebraic division use KCF method.
K - Keep the first fraction
C- Change division to multiplicatin
F -Flip the second fraction.
3) Indenty used: (a -b)² =a² -2ab + b²
Where a = m and b =2
4) Identity used: (a +b)² = a² + 2ab +b²
Where a = w and b = 1
5) Identity used: a² - b² = (a +b)*(a -b)
Where a = z and b = 2