Answer:
The distributive property.
Step-by-step explanation:
We have been given an equation [tex]5+3(2x-7)=5+6x-21[/tex] We are asked to find the algebraic property used in our given equation.
We know that distributive property states [tex]a(b+c)=ab+ac[/tex]. We can see that 3 is distributed to expression [tex](2x-7)[/tex] as:
[tex]5+3(2x-7)=5+3*2x+3*-7[/tex]
[tex]5+3(2x-7)=5+6x-21[/tex]
Therefore, distributive property is used in our given equation.
