Question

Solve the system by substitution. 10x + 4y = -18 x = y 1.1 Submit Answer

Answer 1

x = 3, y = 3

(3, 3)

Step-by-step explanation:

Given the below equations;

`\begin{gathered} -10x+4y=-18 \\ x=y \end{gathered}`

Let's go ahead and solve this simultaneously using the substitution method. To do this, we have to substitute the x = y into the 1st equation and find y;

`\begin{gathered} -10y+4y=-18 \\ -6y=-18 \\ y=(-18)/(-6) \\ \therefore y=3 \end{gathered}`

Since y = 3 and from the 2nd equation we have that x = y, so x is also equal to 3.