<span>x+2y=200 x=y+50 if x + 2y = 200, then let's solve it for x... x = 200 - 2y (subtracted 2y from both sides) Now we have two "x +" equations" x = y + 50 x = 200 - 2y If x equals two things, those two things equal each other (transitive property) y + 50 = 200 - 2y 3y + 50 = 200 (added 2y to both sides)
3y = 150 (subtracted 50 from both sides) y = 50. if y = 50, sub 50 back in for y into either of the two original equations (how about both to check?) x + 2(50) = 200 x + 100 = 200 x = 100 x = 50 + 50 x = 100 it's the same, so x = 100, y = 50 The lines cross at (100, 50) hopes this helps :) :D :)</span>
Step 1: Subtract 50 from both sides. <span><span><span>y+50</span>−50</span>=<span>200−50</span></span><span>y=150 </span><u>Answer: </u><span>y=<span>150</span></span>
