Question
Solve each system by the substitution method. Check each solution.$$\begin{aligned}&x+y=12\\&y=3 x\end{aligned}$$
Step 1
We can substitute $y$ from the second equation into the first equation. This gives us $x+3x=12$. Show more…
Show all steps
Your feedback will help us improve your experience
Grace Muhihu and 63 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Solve each system by the elimination method. Check each solution. $$ \begin{array}{l} 2 x-y=12 \\ 3 x+2 y=-3 \end{array} $$
Linear Equations, Graphs, and Systems
Solving Systems of Linear Equations by Elimination
Solve each system by substitution, if possible. $$\left\{\begin{array}{l}3 x-y=12 \\y=3 x-12\end{array}\right.$$
Linear Systems
Systems of Linear Equations
solve each system using the substitution method. $$\begin{aligned} &3 x+2 y=-3\\ &y=2 x-12 \end{aligned}$$
Solving Systems of Equations by the Substitution Method
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD