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baherus [9]
3 years ago
7

Do question 4 and explain how you got the answer please. The question is on the image

Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0
<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>
daser333 [38]3 years ago
7 0
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>
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