X+y=20 3x-3y=30 which values of x and y satisfy this system of equations?

x +y = 20 ( rewrite as x = 20-y)

3x - 3y =30

3(20-y) - 3y = 30

60-3y - 3y = 30

60-6y = 30

-6y = -30

y = -30 / -6 = 5

x=20-5 = 15

x = 15, y = 5

6x = 3/8x + 4

Step-by-step explanation:

The product of a number (x) and 6 ... 6x

is ... =

four more than ... ___ +4

the product of the number and 3/8 ... 3/8x . . . . (goes in the blank that is added to 4).

Thus, this statement is directly translated to ...

... 6x = 3/8x + 4