Solve by Elimination:
x - 2y = 4
X - 1y = 2

its urgent

x = 0 and y = -2

Step-by-step explanation:

x - 2y = 4 and X - 1y = 2

you mentioned elemination aka substraction

so you when substract x - x =  0  -2y -( -y) = -y and 4 -2 = 2

so - y = 2

or y = 2

now substitute the numbers

x + 4 = 4

x = 0

and try it with one of the equation  or sometimes trying on both of them can be very helpful

10 you would take 50/ .2

step-by-step explanation:

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: