Answer:
the answer is B or D
Step-by-step explanation:
2x+4y=8
-2x -2x
4y=-2x+8
/4 /4 /4
y=-1/2x+2
Step-by-step explanation:
Name the total of pens purchased as x and the pencils as y... Make two equations and solve them. I also search for the pencils purchased in addition
The least common denominator would be 2x^2
that is because you would have to multiply the first fraction by 2x
but you can't just somehow simplify 2x^2, it wouldn't be right
4/x * -4/2x^2
2x*4/(2x*x) * -4/2x^2
8x /2x^2 * -4/2x^2
Then you would complete it
Hope this helps :)
Answer:
30
Step-by-step explanation:
538 = 540
509 = 510
40 - 10 = 30