3 years ago

The sum of an even number and odd number is always even

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

7 0

Yes your correct but thats not a question

diamong [38]3 years ago

6 0

Even numbers are divisible by two and odd numbers are not.
Try some examples to see if you can find a counter-example.

2 + 3 = 5 (odd sum)

4 + 7 = 11 (odd sum)

20 + 9 = 29 (odd sum)

So the sum of an even number and odd number is odd, not even. Your statement above is FALSE.

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-5x+y=6<br> -3x+6y=-12<br> Solving systems of equations by substitution

Yakvenalex [24]

if you isolate y in the top equation to get y=5x+6 then you can substiture y for 5x+6 in the bottom equation because thats what y equals

as of now you have -3x+6(5x+6)=-12 but if you use the distrubite property you would get -3x+30x+36=-12

then if you subtract 36 from both sides you would get -3x+30x=-48 then combine like terms to get 27x=-48 then divide both sides by 27 to get $x=\frac{-48}{27}$ or x≈1.8