How many solutions exist for the given equation? 3(x+10)+6=3(x+12)

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

What properties allow transformation to be used as a problem solving tool