Y-3=2(x-5) ? don’t understand how to do this!

Okay, so let's break it down step-by-step:

1) distribute the 2 inside the parenthesis (2*x and 2*5) it gives you 2x-10

2)So now you're equation is Y-3=2x-10. You want Y by itself if you want it in Y-intercept form. So add three on each side. 3 cancels out on the right.

Y-3=2x-10
  +3       +3

Y=   2x+13

3) And there you go, Y=2x+3 is the answer

Lcm of 6 and 8 is 24lcm of 4 and 12 is 12lcm of 11 and 12 is 132 lcm of 3 and 6 is 6