Step-by-step explanation:
a-b
a=1/4
b= -2,15 -215/100 semplification -43/20
1/4-(-43/20)
1/4+43/20 minimum comune multiple
5+43/20=
48/20=12/5
The answers to the questions
(5,-3) is in the fourth quadrant, if it rotates 90 counter clockwise then it will be in the first quadrant. Your x and y values are going to swap, and you need to know what is true about the numbers since they are in the first quadrant. leave a comment if you need more help.
Answer:
y = -3
x = 1
Step-by-step explanation:
6x-4y=18
3x+2y=-3, so 3x = -2y - 3, then x = (-2y - 3)/3
substitute for x:
6((-2y - 3)/3) - 4y = 18
2(-2y - 3) - 4y = 18
-4y - 6 - 4y = 18
-8y - 6 = 18
-8y = 24
y = -3
x = (-2(-3) -3)/3 = 1