Answer:
x=1 and y=4
Step-by-step explanation:
10x+y=14
2x-y=-2
12x=12; x=1
put x in the problems and y is 4
11/8 or 1 3/8
You must have the same denominator. Therefore, multiply 1/2 by 4 to get a denominator of 8. Be sure to do this for the numerator as well. You end up with 4/8 plus 7/8. You result with 11/8 or simplified 1 3/8.
-7/-9 is equivalent to -14/-18. Multiply the denominator and numerator by the same number(I used 2)
11. 1/81
12. 1/512
13. 1/81
14. 1/125
17. 1/72
18. 189/625