I'm having trouble with these problems, I'm not asking for just the answers, I need to know how to solve them, its a practice for my upcoming final, So I need to know how to do them.

Question

Name the property of real numbers illustrated.
(2√7)*√3=2(√7*√3)

Simplify the expression.
(2x/9+8)-8

Solve the formula for g
s=1/2gt^2

Solve the equation for x.
ax+bx=c

Answer 1

abc = (ab)c = (ab)c
in your list of properties, which one matches this pattern.

Simplify the expression.
(2x/9+8)-8
= 2x/9 + 8 - 8
= 2x/9

Solve the formula for g
s=1/2gt^2
multiply both sides by 2
2s = gt^2
isolate the g by dividing both sides by t^2
2s/t^2 = g

Solve the equation for x.
ax+bx=c
I see a common factor
x(a+b) = c
isolate the x by dividing both sides by (a+b)
x = c/(a+b)

Answer 2

Thank You