This is hard to write... I hope this makes sense to you... 3x-2y=-39 x+3y= 31 We want to use elimination therefor, we need to either get our x or our y to add together to get zero. To do this, we will multiply -3 to (x=3y=31) NEW EQUATION 3x-2y=-39 PLUS -3x-9y= -93 Equals Answer: -11y= -54 y= 4.9 Plug in to solve for x (put new y in) 3x-2(4.9)=-39 x= -9.73
Solving for x on 3x - 2y = -39: First, we must add 2y to both sides. 3x - 2y + 2y = -39 + 2y 3x = 2y - 39 Next, we divide both sides by 3. 3x/3 = 2y - 39/3 Answer: 2/3y - 13
Solving for y on x+3y=31: First, we must add -x to both of the sides. x + 3y + -x = 31 + -x 3y = -x + 31 Next, we must divide both sides by 3. (Like last time.) 3y/3 = -x + 31/3 Answer: y = -1/3x + 31/3
I hope this helps! (And what you're looking for! :>)
