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Answers by Michael F.

or you could divide the numbers and see whether the answer is <=>1, as first number 4 3/8=35/8,  second number 34/7 35/8÷34/7=35/8×7/34=245/272 <1 so 34/7 is larger.

1/|×-4|<1/|×+7| multiply both sides by |×-4|×|×+7| to get   |×+7|<|×-4| which says that the points you are looking for are those whose distance from -7 is less than their distance from 4. The middle of that interval is the point -3/2. The points we want...

(m-n)2=m2-2mn+n2=140-2(49)=140-98=42 You only asked for m-n. The question title asks for more.

solve the system (answer)

y=-x+7 y=(x-3)2/2=(x2-6x+9)/2 So -x+7=(x2-6x+9)/2 or -2x+14=x2-6x+9 or 0=x2-4x-5 competing the square we have (x-2)2-9=0 or x-2=±3 or x=5, or x=-1 In which cases y=2 or y= 8 (5,2) and (-1,8) are the solutions