Answer:
x = 1 and y = 5
Step-by-step explanation:
Use substitution because you know that x = y - 4, and plug this into the first equation to get -10(y - 4) + 3y = 5, or -10y + 40 + 3y = 5. This is -7y = -35 so y = 5. Plug this into the 2nd equation to get that x = 1 and y = 5.
Step-by-step explanation:
-3(-x -3y) = 3( x +3y) = 3x+9y
Since 4 is between 2 & 5 you input it into the middle equation.
x=4
so the answer is 4!
