Answer:
X = 3
Y = 100
Step-by-step explanation:
The best way to solve equations like this is to plug & chug.
First, choose an equation and replace the Y variables with the y=... equation
Y = 30x + 10
(20x + 40) = 30x + 10
Then isolate the variable by subtracting 10 and 20x from both sides
40 - 10 = 30x - 20x
30 = 10x Divide by 10
3 = x
Y is much simpler; Plug x = 3 into one or both equations, plugging it into both will check your answer.
y = 20(3)+40
y = 60 + 40
y = 100
To double check math plug both variables into the other equation.
100 = 30(3) + 1=
100 = 90 +10
100 = 100
