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17 votes
17 votes
X=4y 3x-2y=20please, check

User Vano
by
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1 Answer

7 votes
7 votes

Step 1:

Write the two equations


\begin{gathered} \text{x = 4y} \\ 3x\text{ - 2y = 20} \end{gathered}

Step 2:

Use substitution method to solve for x and y.

Substitute x = 4y into the second equation

Step 3:


\begin{gathered} 3x\text{ - 2y = 20} \\ 3(4y)\text{ - 2y = 20} \\ 12y\text{ - 2y = 20} \\ 10y\text{ = 20} \\ \text{y = }(20)/(10) \\ y\text{ = 2} \end{gathered}

Step 4

Solve for x

x = 4y

x = 4(2)

x = 8

Final answer

x = 8 , y = 2

User Smocking
by
2.8k points