If it is known that a+b/a-b=c, find the following

1. 4(a+b)/2(a-b)
2. 3a+3b/2a-2b
3. (a+b)^2/(a-b)^2
4. a-b/a+b
5. 2a-2b/5a+5b

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?