Question

For each expression,use a property to write an equivalent expression.Tell which property you used. 10:CD= 11:x+13= 12:4(2x-3)= 13:2+(a+b)= 14:Draw algebra time models to prove that 4+8x and 4(2x+1) are equivalent.

Answer 1

10.) DC 
community property

11.) 13+x
community property


12.) 8x-12
distributive property

13.)  (2+a)+b


14.) 4(2x+1)= 4+8x

For question 14 you can do 4×2=8x. Then do 4×1=4. It is equal. Just do distributive property for number 14 for 4(2x+1)